2023 day16/rust: parallelize

Now that `digits` is a fixed-size array, both methods get unrolled the
same and there is no performance difference.

2020/day2/vhdl/.gitignore

@@ -1,5 +1,5 @@
 workdir/
 *.o
 *.ghw
-sim
+day2
 top_syn.vhd

2020/day2/vhdl/day2.vhdl

@@ -0,0 +1,16 @@
+configuration day2 of sim is
+	for aoc_stdio
+		for dut_inst: dut
+			use entity work.top port map (
+				clk => clk,
+				reset => reset,
+
+				char => char,
+				input_valid => input_valid,
+
+				num_verified => output,
+				output_valid => output_valid
+			);
+		end for;
+	end for;
+end configuration;

2020/day2/vhdl/parser.vhdl

@@ -1,14 +1,18 @@
 library ieee;
 use ieee.std_logic_1164.all;
 
+use work.util.all;
+
 entity parser is
 	port (
 		clk : in std_logic;
 		reset : in std_logic;
-		is_record : in std_logic;
+
 		is_data   : out std_logic;
+		record_end : out std_logic;
 
 		char : in character;
+		input_valid : in std_logic;
 
 		num1, num2 : out natural range 0 to 99;
 		letter : out character
@@ -19,23 +23,13 @@ architecture behaviour of parser is
 	type state_t is (S_NUM1, S_NUM2, S_LETTER, S_COLON, S_END_SPACE, S_DATA);
 	signal state : state_t := S_NUM1;
 
-	subtype digit is natural range 0 to 9;
+	type multiples_lookup_t is array(digit_t) of natural range 0 to 90;
-	type multiples_lookup_t is array(digit) of natural range 0 to 90;
 	constant TEN_MULTIPLES : multiples_lookup_t := (0, 10, 20, 30, 40, 50, 60, 70, 80, 90);
 
 	-- most significant digit of number
-	signal prev_digit : digit := 0;
+	signal prev_digit : digit_t := 0;
-	signal current_digit : digit;
+	signal current_digit : digit_t;
 	signal complete_num : natural range 0 to 99;
-
-	function char_to_digit(input : in character) return digit is
-	begin
-		if input >= '0' and input <= '9' then
-			return character'pos(input) - character'pos('0');
-		else
-			return 0;
-		end if;
-	end function;
 begin
 	current_digit <= char_to_digit(char);
 	complete_num <= TEN_MULTIPLES(prev_digit) + current_digit;
@@ -43,22 +37,22 @@ begin
 	process(clk)
 	begin
 		if rising_edge(clk) then
+			record_end <= '0';
+
 			if reset then
 				prev_digit <= 0;
 				state <= S_NUM1;
-			else
+			elsif input_valid then
 				prev_digit <= 0;
 
 				case state is
 					when S_NUM1 =>
-						if is_record then
 						if char = '-' then
 							state <= S_NUM2;
 						else
 							num1 <= complete_num;
 							prev_digit <= current_digit;
 						end if;
-						end if;
 					when S_NUM2 =>
 						if char = ' ' then
 							state <= S_LETTER;
@@ -74,8 +68,9 @@ begin
 					when S_END_SPACE =>
 						state <= S_DATA;
 					when S_DATA =>
-						if not is_record then
+						if char = LF then
 							state <= S_NUM1;
+							record_end <= '1';
 						end if;
 				end case;
 			end if;

2020/day2/vhdl/run.sh

@@ -1,25 +1,8 @@
-#!/usr/bin/bash
+#!/bin/bash
 
-set -eu
+source "$COMMON_DIR/vhdl_run.sh"
-
-INPUT=$(readlink --canonicalize-existing "$1")
-MODE=${2:-}
-GHDLFLAGS="--std=08 --workdir=workdir"
 
 cd "$(dirname "${BASH_SOURCE[0]}")"
 
-mkdir -p workdir
+DUT_OUTPUT_WIDTH=12
-
+test_synth day2 parser.vhdl verifier.vhdl top.vhdl
-if [[ $MODE = "--synth" ]]; then
-	for step in 1 2; do
-		ghdl remove $GHDLFLAGS
-		ghdl synth $GHDLFLAGS -gCOUNTER_WIDTH=12 -gSTEP="$step" parser.vhd verifier.vhd top.vhd -e top > top_syn.vhd 2>/dev/null
-		ghdl analyze $GHDLFLAGS top_syn.vhd sim.vhd
-		ghdl elab-run $GHDLFLAGS sim -gSTEP="$step" --ieee-asserts=disable < "$INPUT"
-	done
-else
-	ghdl remove $GHDLFLAGS
-	ghdl analyze $GHDLFLAGS parser.vhd verifier.vhd top.vhd sim.vhd
-	ghdl elab-run $GHDLFLAGS sim -gSTEP=1 < "$INPUT"
-	ghdl elab-run $GHDLFLAGS sim -gSTEP=2 < "$INPUT"
-fi

2020/day2/vhdl/sim.gtkw

@@ -1,15 +1,15 @@
 [*]
-[*] GTKWave Analyzer v3.3.104 (w)1999-2020 BSI
+[*] GTKWave Analyzer v3.3.109 (w)1999-2020 BSI
-[*] Wed Dec  2 10:02:23 2020
+[*] Wed Dec  1 11:30:36 2021
 [*]
-[dumpfile] "/home/xiretza/dev/aoc2020/day2/sim.ghw"
+[dumpfile] "/home/xiretza/dev/advent-of-code/2020/day2/vhdl/workdir/sim1.ghw"
-[dumpfile_mtime] "Wed Dec  2 10:01:08 2020"
+[dumpfile_mtime] "Wed Dec  1 11:29:37 2021"
-[dumpfile_size] 410436
+[dumpfile_size] 408417
-[savefile] "/home/xiretza/dev/aoc2020/day2/sim.gtkw"
+[savefile] "/home/xiretza/dev/advent-of-code/2020/day2/vhdl/sim.gtkw"
-[timestart] 410945000000
+[timestart] 411833500000
-[size] 1600 853
+[size] 1920 1035
 [pos] -1 -1
-*-27.864407 226600000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
+*-25.864407 520000000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
 [treeopen] top.
 [treeopen] top.sim.
 [treeopen] top.sim.top.
@@ -20,9 +20,10 @@
 @28
 top.sim.clk
 top.sim.reset
-top.sim.top.parser_inst.is_record
 @420
 top.sim.top.char
+@28
+top.sim.input_valid
 @200
 -
 @28
@@ -33,15 +34,13 @@ top.sim.top.num2
 top.sim.top.letter
 @200
 -
-@420
+@29
-top.sim.top.verifier_inst.count
+top.sim.top.record_end
 @28
-top.sim.top.verifier_inst.verified
+top.sim.top.verified
 @200
 -
 @24
 #{top.sim.num_verified[11:0]} top.sim.num_verified[11] top.sim.num_verified[10] top.sim.num_verified[9] top.sim.num_verified[8] top.sim.num_verified[7] top.sim.num_verified[6] top.sim.num_verified[5] top.sim.num_verified[4] top.sim.num_verified[3] top.sim.num_verified[2] top.sim.num_verified[1] top.sim.num_verified[0]
-@29
-top.sim.top.record_ended
 [pattern_trace] 1
 [pattern_trace] 0

2020/day2/vhdl/sim.vhd

@@ -1,86 +0,0 @@
-library ieee;
-use ieee.std_logic_1164.all,
-    ieee.numeric_std.all;
-
-use std.textio.all;
-
-entity sim is
-	generic (
-		COUNTER_WIDTH : positive := 12;
-		STEP : natural range 1 to 2
-	);
-end entity;
-
-architecture a of sim is
-	signal char_in : character;
-	signal clk, reset, is_record : std_logic;
-	signal num_verified : unsigned(COUNTER_WIDTH-1 downto 0);
-
-	procedure print(s: string) is
-		variable l : line;
-	begin
-		write(l, s);
-		writeline(output, l);
-	end procedure;
-begin
-	process
-		variable current_line : line;
-		variable current_char : character;
-		variable good : boolean;
-
-		procedure cycle_clock is
-		begin
-			wait for 10 ns;
-			clk <= '0';
-			wait for 10 ns;
-			clk <= '1';
-			wait for 0 ns;
-		end procedure;
-	begin
-		clk <= '0';
-		is_record <= '0';
-		char_in <= NUL;
-
-		reset <= '1';
-		cycle_clock;
-		reset <= '0';
-		cycle_clock;
-
-		lines_loop: loop
-			exit lines_loop when endfile(input);
-			readline(input, current_line);
-
-			is_record <= '1';
-
-			chars_loop: loop
-				read(current_line, current_char, good);
-				exit chars_loop when not good;
-
-				char_in <= current_char;
-				cycle_clock;
-			end loop;
-
-			is_record <= '0';
-			cycle_clock;
-		end loop;
-
-		cycle_clock;
-
-		print(to_string(to_integer(num_verified)));
-
-		wait;
-	end process;
-
-	top: entity work.top
-		generic map (
-			COUNTER_WIDTH => COUNTER_WIDTH,
-			STEP => STEP
-		)
-		port map (
-			clk => clk,
-			reset => reset,
-			char => char_in,
-			is_record => is_record,
-			num_verified => num_verified
-		);
-end architecture;

2020/day2/vhdl/top.vhdl

@@ -4,15 +4,18 @@ use ieee.std_logic_1164.all,
 
 entity top is
 	generic (
-		COUNTER_WIDTH : positive;
+		OUTPUT_WIDTH : positive;
 		STEP : natural range 1 to 2
 	);
 	port (
 		clk : in std_logic;
 		reset : in std_logic;
 		char  : in character;
-		is_record : in std_logic;
+
-		num_verified : out unsigned(COUNTER_WIDTH-1 downto 0)
+		input_valid : in std_logic;
+
+		num_verified : out unsigned(OUTPUT_WIDTH-1 downto 0) := (others => '0');
+		output_valid : out std_logic
 	);
 end entity;
 
@@ -21,20 +24,20 @@ architecture behaviour of top is
 	signal num1, num2 : natural range 0 to 99;
 	signal letter : character;
 
-	signal prev_is_record : std_logic;
+	signal record_end : std_logic;
-	signal record_ended : std_logic;
 
 	signal verified : std_logic;
 begin
-	record_ended <= prev_is_record and not is_record;
-
 	parser_inst: entity work.parser
 		port map (
 			clk   => clk,
 			reset => reset,
-			is_record => is_record,
+
+			record_end => record_end,
 			is_data   => is_data,
+
 			char   => char,
+			input_valid => input_valid,
 
 			num1   => num1,
 			num2   => num2,
@@ -45,8 +48,8 @@ begin
 		verifier_inst: entity work.verifier(step1)
 			port map (
 				clk => clk,
-				reset => reset or record_ended,
+				reset => reset or record_end,
-				is_data => is_data,
+				enable => is_data and input_valid,
 				num1   => num1,
 				num2   => num2,
 				letter => letter,
@@ -57,8 +60,8 @@ begin
 		verifier_inst: entity work.verifier(step2)
 			port map (
 				clk => clk,
-				reset => reset or record_ended,
+				reset => reset or record_end,
-				is_data => is_data,
+				enable => is_data and input_valid,
 				num1   => num1,
 				num2   => num2,
 				letter => letter,
@@ -72,13 +75,13 @@ begin
 	process(clk)
 	begin
 		if rising_edge(clk) then
-			prev_is_record <= is_record;
 			if reset then
-				prev_is_record <= '0';
 				num_verified <= (others => '0');
-			elsif record_ended and verified then
+			elsif record_end and verified then
 				num_verified <= num_verified + 1;
 			end if;
 		end if;
 	end process;
+
+	output_valid <= '1';
 end architecture;

2020/day2/vhdl/verifier.vhdl

@@ -5,7 +5,7 @@ entity verifier is
 	port (
 		clk : in std_logic;
 		reset : in std_logic;
-		is_data : in std_logic;
+		enable : in std_logic;
 
 		num1, num2 : in natural range 0 to 99;
 		letter : in character;
@@ -24,7 +24,7 @@ begin
 		if rising_edge(clk) then
 			if reset then
 				count <= 0;
-			elsif is_data then
+			elsif enable then
 				if char = letter then
 					count <= count + 1;
 				end if;
@@ -45,7 +45,7 @@ begin
 			if reset then
 				count <= 1;
 				parity <= '0';
-			elsif is_data then
+			elsif enable then
 				count <= count + 1;
 				if (count = num1 or count = num2) and char = letter then
 					parity <= not parity;

2021/data/day10.expected

@@ -0,0 +1,2 @@
+278475
+3015539998

2021/data/day10.input

@@ -0,0 +1,110 @@
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+{{{<(<<{<([[<{[][]}<<><>>>{{(){}}}]<{[{}{}][<><>]}[[[]()][()[]]]>])(<{([[]][<>{}])[([]<>){[][]}]}(([[]()]
+(([{<{<<{((({[()[]]([][])}[{()}(<>)])[<(()<>)>(([])[{}[]])]){{([()()){[]()})}})}({<<[(()<>){()}
+{[[{[[[{[[<(({{}}{{}()}){{()<>}{<>()}})>({<{(){}}>{(<>{})(())}}((({}()))({[]()}<()()>)))]<(
+<<[({({(((<<[[<>{}]{<>()}]{[<>{}][[]()]}>([[<>]]{{<><>}[<>[]]})>)){[<[[<<>()>{<>{}}][(()<>){[]{}}]]>}<[[<
+({<([{({{<{{<{(){}}<()[]>><{()<>}(()())>}[([{}[]]<<>{}>){<[][]>({})}]}<{({{}[]}<[][]>)((<>{})(()<>))}<{<{}(
+{([{{[({[<<(([[]()])<(<>())[<>[]]>]{([[]{}]([]()))}>([{{[][]}({}{})}(([]{})[[]<>])])>[<<[{<><>}[
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+[(<[[[<[{(([{{<>{}}([]{})}[{<>()}{<><>}]]<{(()())<{}[]>}{(<>)[<>[]]}>){{({<><>}(()))}({<[]{}>{<>[]}})})
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+<<[<<[[[<{<[{{<>()}(<>{})}([[][]])]{[(<><>)(<><>)]((()<>)[()[]])}>[<[<()[]>[(){}]]((<>())[()<>])>]}>]]
+<<{<[([[((<[[{<>{}}]<[()<>]([]{})>]{<({}<>){()()}><<()()>>}>[<<<<>()>{[]()}><<()()><<>()}>>])
+{(<[{{([{<(<{[{}{}]<<><>>}([<>{}][[]()])>(([<>[]])[{{}[]}{{}{}}]))[(({<>()}<()()>){([]{}){[]
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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6

2021/data/day14.expected

@@ -0,0 +1,2 @@
+2068
+2158894777814

2021/data/day14.input

@@ -0,0 +1,102 @@
+KFFNFNNBCNOBCNPFVKCP
+
+PB -> F
+KC -> F
+OB -> H
+HV -> N
+FS -> S
+CK -> K
+CC -> V
+HF -> K
+VP -> C
+CP -> S
+HO -> N
+OS -> N
+HS -> O
+HB -> F
+OH -> V
+PP -> B
+BS -> N
+VS -> F
+CN -> B
+KB -> O
+KH -> B
+SS -> K
+NS -> B
+BP -> V
+FB -> S
+PV -> O
+NB -> S
+FC -> F
+VB -> P
+PC -> O
+VF -> K
+BV -> K
+OO -> B
+PN -> N
+NH -> H
+SP -> B
+KF -> O
+BN -> F
+OF -> C
+VV -> H
+BB -> P
+KN -> H
+PO -> C
+BH -> O
+HC -> B
+VO -> O
+FV -> B
+PK -> V
+KO -> H
+BK -> V
+SC -> S
+KV -> B
+OV -> S
+HK -> F
+NP -> V
+VH -> P
+OK -> S
+SO -> C
+PF -> C
+SH -> N
+FP -> V
+CS -> C
+HH -> O
+KK -> P
+BF -> S
+NN -> O
+OC -> C
+CB -> O
+BO -> V
+ON -> F
+BC -> P
+NO -> N
+KS -> H
+FF -> V
+FN -> V
+HP -> N
+VC -> F
+OP -> K
+VN -> S
+NV -> F
+SV -> F
+FO -> V
+PS -> H
+VK -> O
+PH -> P
+NF -> N
+KP -> S
+CF -> S
+FK -> P
+FH -> F
+CO -> H
+SN -> B
+NC -> H
+SK -> P
+CV -> P
+CH -> H
+HN -> N
+SB -> H
+NK -> B
+SF -> H

2021/data/day16.expected

@@ -0,0 +1,2 @@
+904
+200476472872

2021/data/day16.input

@@ -0,0 +1 @@
+20546C8802538E136091C1802689BCD7DA45948D319D1B100747A009C97696E8B4ABFCA6AB8F4F26C401964A6271C80F802D392C01CEDDCE6E5CB829802F600A00021B14E34C361006E0AC418BB2CA6800BE4599BB6A73507002A52BEEB14D201802F600849E64D3369D37C74100866785B3D0ADFD8E601E5EB9DE2366D93ECB8B040142CB8ACE07CCB5CF34CA89380410B6134CE6FEF104A2B200243396976A00401A45004313D68435DBDDDA61CE6428C01491AEBF0C7E580AE00CCC401B86514216880370EE3443D2013DF003750004361343D88800084C4C8B116A679018300740010C8571BA32080350DA0D42800043A3044189AE0174B314D76E1F3ACF3BDAE3EE7298FF134002EF9DBCD0644127E3CAE7FCBA9A80393544F9A927C973DF1A500965A5CEA94C4DDA5658B94C6C3002A798A629CF21280532BAB4F4C7271E45EE6E71D8143A9BC7948804AB94D1D6006AC200EC1E8A10C00010985316A35C3620061E641644D661A4C012993E99208FC60097802F28F528F738606008CA47205400814C89CC8890064D400AB4BE0A66F2BF253E73AE8401424A7BFB16C0037E06CE0641E0013B08010A8930CE2B980351161DC3730066274188B020054A5E16965940057895ADEB5BF56A635ADE2354191D70566273A6F5B078266008D8022200D46E8291C4401A8CF0CE33CEDE55E9F9802BA00B4BD44A5EA2D10CC00B40316800BAE1003580A6D6026F00090E50024007C9500258068850035C00A4012ED8040B400D71002AF500284009700226336CA4980471D655E25D4650888023AB00525CAE5CBA5E428600BE003993778CB4732996E9887AE3F311C291004BD37517C0041E780A7808802AF8C1C00D0CDBE4ACAD69B3B004E13BDF23CAE7368C9F62448F64546008E0034F3720192A67AD9254917454200DCE801C99ADF182575BBAACAC7F8580

2021/data/day2.expected

@@ -0,0 +1,2 @@
+1714680
+1963088820

2021/data/day22.expected

@@ -0,0 +1,2 @@
+642125
+1235164413198198

2021/data/day22.input

@@ -0,0 +1,420 @@
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+
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+
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+
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+
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+
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+
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+
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+
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+
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+
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+
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+
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+
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2021/data/day5.expected

@@ -0,0 +1,2 @@
+5442
+19571

2021/data/day5.input

@@ -0,0 +1,500 @@
+62,963 -> 844,181
+58,85 -> 917,944
+137,76 -> 137,347
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+178,65 -> 977,864
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+586,42 -> 89,42
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+49,336 -> 99,386
+560,187 -> 560,551
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+957,835 -> 957,106
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+541,946 -> 541,405
+355,147 -> 724,516
+644,476 -> 625,476
+789,818 -> 207,236
+259,57 -> 431,57
+441,375 -> 441,34
+774,121 -> 882,13
+655,397 -> 188,864
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+268,121 -> 268,842
+975,14 -> 11,978
+124,904 -> 935,93
+401,582 -> 420,582
+170,700 -> 523,347
+20,681 -> 20,174
+420,939 -> 173,692
+61,933 -> 956,38
+686,458 -> 686,939
+780,561 -> 305,86
+792,644 -> 792,780
+632,550 -> 938,550
+441,252 -> 841,252
+789,59 -> 789,418
+981,11 -> 278,714
+264,41 -> 264,186
+870,833 -> 605,568
+160,905 -> 160,783
+385,191 -> 385,403
+774,791 -> 69,86
+409,967 -> 409,173
+868,41 -> 868,235
+536,497 -> 949,497
+757,119 -> 156,720
+563,706 -> 883,706
+124,482 -> 14,482
+353,655 -> 904,104
+194,868 -> 194,649
+810,736 -> 748,736
+815,578 -> 50,578
+531,131 -> 241,131
+18,972 -> 977,13
+761,747 -> 73,59
+650,701 -> 930,701
+470,237 -> 470,740
+333,803 -> 954,182
+644,667 -> 235,667
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+985,876 -> 985,503
+170,924 -> 467,924
+249,19 -> 981,751
+462,666 -> 462,651
+404,228 -> 877,228
+174,440 -> 174,847
+910,596 -> 672,596
+430,663 -> 734,663
+711,294 -> 69,294
+193,302 -> 257,302
+959,20 -> 13,966
+171,561 -> 171,953
+704,986 -> 29,311
+285,886 -> 285,260
+945,872 -> 531,458
+265,748 -> 478,748
+26,537 -> 26,851
+205,210 -> 917,922
+590,488 -> 241,139
+536,179 -> 247,179

2021/data/day6.expected

@@ -0,0 +1,2 @@
+391888
+1754597645339

2021/data/day6.input

@@ -0,0 +1 @@
+5,1,1,4,1,1,4,1,1,1,1,1,1,1,1,1,1,1,4,2,1,1,1,3,5,1,1,1,5,4,1,1,1,2,2,1,1,1,2,1,1,1,2,5,2,1,2,2,3,1,1,1,1,1,1,1,1,5,1,1,4,1,1,1,5,4,1,1,3,3,2,1,1,1,5,1,1,4,1,1,5,1,1,5,1,2,3,1,5,1,3,2,1,3,1,1,4,1,1,1,1,2,1,2,1,1,2,1,1,1,4,4,1,5,1,1,3,5,1,1,5,1,4,1,1,1,1,1,1,1,1,1,2,2,3,1,1,1,1,1,2,1,1,1,1,1,1,2,1,1,1,5,1,1,1,1,4,1,1,1,1,4,1,1,1,1,3,1,2,1,2,1,3,1,3,4,1,1,1,1,1,1,1,5,1,1,1,1,1,1,1,1,4,1,1,2,2,1,2,4,1,1,3,1,1,1,5,1,3,1,1,1,5,5,1,1,1,1,2,3,4,1,1,1,1,1,1,1,1,1,1,1,1,5,1,4,3,1,1,1,2,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,3,3,1,2,2,1,4,1,5,1,5,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,5,1,1,1,4,3,1,1,4

2021/data/day7.expected

@@ -0,0 +1,2 @@
+342641
+93006301

2021/data/day7.input

@@ -0,0 +1 @@
+1101,1,29,67,1102,0,1,65,1008,65,35,66,1005,66,28,1,67,65,20,4,0,1001,65,1,65,1106,0,8,99,35,67,101,99,105,32,110,39,101,115,116,32,112,97,115,32,117,110,101,32,105,110,116,99,111,100,101,32,112,114,111,103,114,97,109,10,775,180,473,1346,1189,1553,196,427,788,25,159,204,851,24,1404,91,308,1096,747,278,1185,36,752,57,54,583,570,260,735,1192,72,552,103,693,383,202,78,1050,453,116,333,182,765,60,372,201,291,1642,49,80,918,98,1443,36,577,696,1289,56,220,56,51,550,1666,651,652,1508,70,40,1473,57,1065,32,6,537,1053,315,711,163,476,1006,3,1092,18,1304,237,358,457,888,36,639,39,1051,723,590,1242,210,1217,473,488,1554,729,776,307,375,243,186,436,94,451,1230,495,861,480,28,323,529,92,65,43,564,143,183,81,965,82,168,303,331,99,921,583,1349,182,353,626,150,475,1388,381,539,1190,664,923,1579,564,31,186,171,415,69,82,621,579,636,787,154,384,463,124,213,270,318,16,21,429,1285,1052,755,248,67,1021,20,165,789,7,456,18,1432,1379,3,108,96,40,42,1148,665,526,392,616,405,633,399,152,388,9,1078,159,454,945,330,2,455,288,288,72,313,827,521,939,186,680,253,386,917,317,346,1897,520,662,558,919,31,1141,1025,29,80,601,1001,199,128,1721,1221,367,29,722,186,344,136,415,718,122,7,879,195,1430,250,65,391,1296,154,39,647,861,175,18,448,131,568,322,20,290,828,844,135,622,409,236,40,341,767,31,917,5,335,27,205,63,18,1262,615,1819,291,1263,179,206,686,102,18,483,525,331,303,932,664,337,774,1080,22,177,891,780,523,362,38,219,281,72,861,48,1382,1497,249,343,404,292,1252,1,532,370,421,155,1728,110,1778,804,944,142,1508,155,967,1201,1066,706,613,1222,40,1000,558,616,693,378,124,35,91,514,1445,7,280,775,744,421,236,597,143,380,91,1564,111,1359,711,453,73,247,427,119,182,508,598,514,543,297,182,397,24,1317,107,766,428,877,580,1135,13,266,568,369,570,5,214,1222,150,225,93,1168,7,793,346,17,70,127,734,1428,1513,274,409,1291,498,958,535,37,268,994,165,662,59,125,267,557,28,259,77,1226,588,499,105,15,238,272,272,100,329,642,68,356,782,90,674,608,431,1,442,835,3,780,51,394,146,71,231,582,81,595,921,913,398,831,1107,491,801,371,407,746,1337,196,7,86,427,72,217,3,98,717,1268,991,187,103,256,616,172,125,831,1380,935,281,1534,435,868,1291,51,894,91,527,443,868,1300,72,1108,259,641,381,1103,580,422,310,953,97,8,198,1249,1069,342,953,464,66,648,683,184,702,1488,440,389,408,0,47,1023,45,63,999,131,73,135,256,1586,798,61,43,708,138,500,952,10,170,1287,956,1454,886,1117,405,1064,252,1218,334,316,1116,485,63,336,1218,528,309,86,833,168,955,45,993,841,480,336,512,835,296,285,340,81,1291,61,51,5,284,1114,120,794,1444,889,28,0,327,134,71,1040,230,48,49,837,1191,558,3,26,760,1038,104,320,87,464,270,115,357,277,285,488,1649,477,972,423,524,657,20,395,958,528,13,125,391,90,334,314,1022,1147,200,1357,1092,559,610,193,296,60,188,0,2,277,540,365,79,278,199,1327,573,615,95,677,285,143,182,226,12,661,492,189,526,75,1358,923,228,59,417,535,544,270,1040,197,2,216,1217,372,1034,84,16,725,1798,352,147,290,528,1091,105,476,725,137,474,75,1313,644,92,43,286,47,118,11,865,1316,1464,1189,673,67,612,183,379,309,464,207,31,64,1375,34,413,618,131,1459,178,179,81,245,316,223,230,697,337,977,188,1335,811,163,592,181,93,108,865,112,20,497,986,1124,73,128,96,107,1288,179,229,145,1293,1224,1308,748,768,143,38,33,1842,64,45,1209,984,269,371,1451,876,1372,65,275,173,1569,298,187,91,522,133,39,709,878,2,123,195,1435,1569,482,1047,322,382,796,38,903,24,950,387,510,460,570,499,545,561,158,383,213,978,1329,380,938,280,267,762,841,713,111,357,71,19,121,581,91,177,869,1138,173,14,145,155,21,353,340,1145,113,594,685,91,781,558,500,10,33,300,270,457,675,850,64,49,81,311,906,404,207,176,309,45,855,16,9,881,428,194,300,329,715,985,559,656,66,184,1529,8,1131,610,78,522,338,492,1378,47,163,448,111,700,3,19,796,876,224,212,51,524,273,597,980,0,10,205,8,985,38,876,6,91,435,1273,38,147,214,362,1,95,87,724,1126,807,378,105,89,276,1076,107,552,1082,32,896,202,177,946,753,1106,464,72,61,225,55

2021/data/day8.expected

@@ -0,0 +1,2 @@
+543
+994266

2021/data/day8.input

@@ -0,0 +1,200 @@
+bgafcde gfcd agc ebdgac adfceb bafeg efgca cgdfae cg ecadf | fabgced gc agc cdfg
+gbdacfe gcabfd cdb dcfba bfacg cgad fadeb feabcg cd gcbfed | bdagcef dcb cdag gbfca
+dgcbafe dbfca fbaed be cedb gefad dcfeab facdgb eba gbface | eb gadfcbe cfbad gfbeca
+ebc cb aedbf agcef badecg gaebfc bcgf adbcfge ceabf daecgf | cb bce efdab ecbaf
+fedbc cebad gfcbd fec gcdfab ecbfga dacgbfe gfed fe gefbdc | bfecag cef egdf fgde
+bafedc baefg dbfga daegcb gae egbcfa eg cefab fgce decbafg | abdgf cgfe cedgba befga
+dcba fagbed cgbfed dgfbeac da dag acbgde fcaeg becgd acgde | agd bacd dga gbecad
+ec aebgcfd fecd bagfec efagd edfgab cgdfea dgcab ecdga eac | ce ec ce gbacefd
+aegdbfc fe dacbf aefbgd aecgb cdfe ebadcf ecbfa cbfdga aef | dfce fe fcde afebdgc
+bgaf gcbad cagdfb gb dfbeca degfcb bfadc cfgeadb bdg agcde | fdegacb acbefgd bdg gafb
+gdecba dcae ec dbfeag bgead dgbce gec cgefab dcbgefa cdbfg | afdbgce agbfde abcgefd ec
+gacbefd fgbedc egafdc adf fcbae afedb ad bfeadg adbg dfgeb | ad degcfa ad dfbge
+fadebc baef eadfcg ebgdc eda cfgabd afbdc ea edcab cdgbefa | aefb ead ea ebaf
+badgecf caefd aebfdc fecbdg fadcg fed de ebad abgecf bceaf | ed gcfebd aebd gfdca
+bcdae aefcbg fgdea bf cdabegf adcebf fcbd fbead afb begadc | gbcafe faegbc fba eabdc
+bfcdeg ecd eabgc adeg ed dbaec bcfad ecabfg dbgcfea dbacge | de bdfcaeg ecgfbd bcdea
+deacf bf eagfdb gfecadb facbeg bfa cbdage abfce fbcg gecab | aebcf ecfagb abegfd bgeac
+eag dgbecf gdfae caed dfebgca ea ebcgfa dfbag gecfda dgcfe | ae ea deac fcdega
+edbga egdabc cgfdbe gabfe efcdgab gbdefa fb abdf fbg gecfa | cgaebd cbgdea acgfe begdca
+cgfedb egbdc agcfd cdagb eabgdf ab abce adb agcebfd dabegc | ba bda abd deagfb
+fc agfbce fdebg dgafeb ebfdc cbf cfedgba fdcg gcefdb eacdb | gbfaec fgcbed gbceafd bedagf
+bdcgefa acdfbe ed gbcea cfgbad ecbda edfcag afcbd ead bdef | dfbe de dea dea
+gfbeca gcefdb fegacd cgbda fbde ed bgedc begcf agdcefb ced | gbacd ced dec bcegfd
+dgbacf gfabec agd egdaf badcegf ad ecgaf defgb cade dfegca | cdae dga bgcaef ad
+dcf cfadb bcagd afebd fbgdec egfcbda fcea gfeabd fc ebdfac | gabdc ebfad aefc eacbdf
+cfgdba fcdab cgfbade adeb afdebc egcfdb de aedfc cfage edf | ed eadb dgebcf cefdabg
+bcae befga dgebfc fbagce cbefg agb fcedgab ba bdgacf dgfae | beca dcaegbf gab geafb
+dgafbec fedba cbega aebfdc eabfdg bdgfce edc fdac cd adceb | abedf dfeabg dc gdbefc
+adegfbc gbedcf cfabd gacedb abcfe fdbacg dgabc df dfga bfd | fdag dbf dafg fd
+dfbcag ebfcad ed agecdb bfacd egbfa badfe afbcegd aed cdef | afebd ecdf cfed eadfbgc
+fca dbcaf ebdcf fadbg cdbefa adec ac dacbgfe fbcdge cgefba | ac edca edac ca
+agdfce cedbfag agc dcbaeg gc bcdga bgdfa cfaebd ebdac cbge | ceadb becg ebadc gc
+aefbc aecdg efgcad cdebag bcg agfdbc bceag bdge bg fecdgab | bgecda bcdaeg gb caebf
+cfgebd acedf ag gbad gcfbad acg bgecfa bdfcg gbadecf cdfga | dgba dgcbf gac bgfdc
+cdgbafe cdgbe gd agde bcaged dfebc geacb cdg bgeacf gbdcfa | efgcba edag gecfdba cgd
+bcg bcaf cegdaf dfacg dgacb fgcebda bgdcaf efbcgd bc gadbe | gcb bcg caebdfg cfab
+eg cdgfae aecfd fgbaedc gbdfc facdeb cfegd ceag efg efdgab | fge acefbgd egf efg
+fcdg gefda cf edabc cedgfa cfa acefd cfebadg gdbafe bgecfa | fc fca cfabged fca
+ed bcadegf egdfb fgcdb edbafg facbeg abegf deba fadgec dge | eadb ged eadb adfegb
+bgedc cf cefadg ecbgdf gbfae cbdf fcg ecbgad abfgced becfg | bdcf dbceg fgcbde cdbeg
+cg gcaf defcag cdefg gdafe dgfabe gec dabegfc bcegad ebdcf | feadg degcf gcaf dcgefa
+fdeac gdcebf daecbg bgfec fdeagbc gca gecfa aefcbg fbag ag | ga decfagb ag agfb
+bc fbdc bagecdf gfdcab acdgb dcaeg dbgfa cgbaef ebgfda gbc | bdfc cb cfbd fbcd
+efagc bafegd abecg eab eb fgbeca gbedcfa bfec fcgade cgbad | abfgdce degacf fcaebg cdabfeg
+egbfcd afde ecgab fac fa edabcf cbdagfe afbec cfabgd fdebc | deaf feda cgbdfa fa
+gbafd defca ebcf eb cefbad dcebag dcgfae edfab deb bgedcfa | be deb gdbafce be
+afdgceb cf gbdeaf acdbfe abcef acf deafb fedgac cdbf cgeba | fac cfdb bdfcae fdcb
+cfdba ca afbgd eabc cda afbcdeg cfedb ecfgbd efcgad bcfeda | bfgad abec abce caeb
+cfebad debfacg acgfeb cab fedcb afcdb cdae febcdg ac dgbaf | bac ca faecbgd cgbfae
+eg dfcegb dge abedcgf facdg bafdgc degacf dafeg agec adebf | egd fegda fedbcag eagdf
+age gcbad feacb cgbdfae ge gfbe agebc fcadeg cbafde cgebaf | fagecdb bfeg baecg fceabd
+bfcdge fgcbead ebdgac ba dagbfe gab dabc bcegd gface cebga | cbda gbedc egcbafd gab
+dbcegfa fadceg fcage bcage gb bdagfc abdec gbfe bgafce bcg | ebfdagc ebfg ebgf egfb
+gcdefa bagf dgebf bdefc bgcafde dbefga edabg gfe gf dcgeba | fg efg agfb gebfd
+fabdc gdeabf dag gbace adcgb gd eagfcb gaedbc egdfabc egdc | adgbc bcadf gd cedfabg
+deagcf ce dfcaeb gfadceb bgade cde daegc cgdafb gadcf efcg | dbaecf fdecbga ce ecd
+dfcbag abceg db dgcefa dabec bcegdaf cdb bdef defac cfbdea | gdafec dcb febd bdef
+ead fgceabd edgcaf da fgda fgcea ecdgb cgaed fdbace cbagef | ad eafcdb bfecagd ad
+ab caefg agbcef efacb gecdfba ecfagd fbdec bdecga cba fgab | eafgc abfg cdagbfe dcageb
+afbcge ebafcgd dacegb cfbea afbg agc egcfa ag cgdfe bdceaf | adfbceg fagb gfba aecgbf
+acg cdegbf ecfadg cgdab fcbadg cdbgfae ca agedb cbgdf facb | cdeabfg ca afbc dagfec
+dca dbfae bagdcf aceg ac afdegc cegfd fcedgb cbdaegf cedfa | dac acge cedgf cfdbgae
+gdcafe ega cgbfde cgba afdbe bacegd ga begdc dcebagf edgab | abgc ga bacg bdacge
+begfda gdafce fg gdbf gbaced agf decagbf aebdg gabfe cebfa | fag acdbeg agcdfe dgbefca
+gfcdbea fecab cbadge afgce gc fgdace fdcg cga eagdf eagbfd | efgacbd gc dgfc dacbeg
+gdbefc feadg dbagef afd abde gebfd cefga bdgafc da efdacbg | cbegfda adf bade cdgfbe
+aefbdgc eabcfg cgefa degbf cedfg cd cadg cde fgecad fecadb | dbfegca egcdabf gcda dc
+baed bcgda abdegc decag ega dgbfaec gacbfe ae cgfde dbacgf | aebd age ea bgdecfa
+abecg faegcd egfcd efcga cdaf baedgf efa fcbaedg fcgedb fa | afe af aef fa
+abgfce cbedgaf fbedc eacdfb dcf fd faegcd fecba dfba gdceb | faecdg gdceb dfc gcbde
+fgce fgadb egdabc edg defbg eg bfced fdbace bdfgeac gbcfde | gdcbfea deg afbedc dgcaeb
+eg dgcfe efdgab bfdec aecg acbegfd bdcafg adcfg efg daefgc | fge aecg gfe ecagfdb
+acdfe bedcfg abgec cfeabd aedbfcg fecdag fg fcg afecg gdaf | cdaefg fdag cgf gadcfbe
+aedc gbdac cbagfe bfdcg gdbfea acb cbgaed ac eadgb gecadfb | gbfdc gbdaec fbgeadc decabg
+gbc afgdb cfbdga badgef gadbce egabcdf geacf bcdf cb gabfc | fgaec fcagdeb gbcfa bc
+cfgabd cfdbe eafgdc badcfeg dgfab cbag eafbdg gc dfgbc cdg | fagecd cgd afdbge cg
+eadcbf fcag gc gbc gadcefb gebad febdgc egcbaf ecbag bacef | dgbfec egadcbf gcfa bcegfda
+acbeg acgedb eg dgbfce cdagb cgdbaf gaed bafce cfebadg ecg | dbgac eabcf eabfdgc eagd
+bgefda eacg abdcfe eabcd abegcd ebg cbedg cbfdg dgfecab eg | ecag eg ge afebcd
+dgecbf bg dfcba abge gadebc edagc bcg ecdfga fbgecad bgcad | cgb gbea ebgcdf gbae
+dcabg gdfbca debc aed ed fabeg afdecg gbeda caegbd agbfcde | fcbdgea cedb dea efcdagb
+edbcafg cgaed gc gbdc acfebd cge gceabd abecd afegd bgafce | gc facegbd edbcaf cg
+gadbce gbdaf acebgf bd abcgfd edfga cdfb gbd cfgab dgafbce | gfdab fdegbac eabcfdg bgcdae
+eacgf fb cegbdf dgbfca cfb dfba agfcb cgabd ebcdgfa gedacb | acbdg dbaf ceafg bf
+gebac egdacf fdceg daef af gfa dagfbc fcgbead afgce cebfgd | afg bcage gcdeabf cgfea
+cdabfg fgbec gcdafe ceafgb egc ec beac febdg bdegcfa fabcg | cafegdb beca ecgbfa bace
+gda feabdg ebgaf bgdfc bgfcae bfeagdc edab ad adgbf fceagd | gad ad afgbde dfaebg
+bfc bgfced edbfag fcea cf afgbdce cgbda abgef fcgba aebcfg | bcf efac eacf fc
+bdeag bgdcf ec ebgdfac gcbde gaec dec cafdeb afdebg cebdag | gcbfd agedb acfdbe ecd
+befad gd edgbf bcgafd cebgfd abgcef gfd ecgd cgdfaeb ecfgb | cegd cdeg efadbgc egcdbaf
+gfdbae bc cegbfd gadcf cdaefgb gfbed fbcgd beagcd gbc becf | gedcfba edcagb fbcgdae cfbe
+ecf cbdaf bdfcaeg fagdec efba bcdfe bfecda gcedb ef cbadgf | ef fbedc dbceg edgfcab
+cabde ae ecfdba cbdfe faed dabcg cfbgaed gbfcea begdcf abe | adfe aeb cabgd ae
+gefcabd ecabd gebafc ag ecfgbd gacdbf dfcbg fdga cagbd acg | gebcadf gefbac dgaf dagf
+bgde efcgd cebgfa dbacgf cgfeb gdc fdaec dfbceg gd fegcadb | efbcadg cgd gbdcfa facebg
+gefcbd bgfdcea fg dcbag fbgcd fgeb defcag fcg becfad dfcbe | cefbda cfg fegbdc fg
+bcfed bcfdge aedbfg fad decbfa facge cdba efdca ad dbfagce | eabfgd fadce begfdca gecdbaf
+edfgbca dbega fdb gfecab fd ebcfda cfda feabd becfa edgbfc | df ebgad cabegfd adcf
+daegbc fbacg edfg befdac efbcd edafbgc cdg bcgfd fdegcb gd | dg becdf dbeafcg gadefcb
+egdacf gde ed dfebcag acgdfb cfadg agebdf cgeab gecda dfce | fedagc gabfecd eadgfbc cfgebda
+dfcea afbde fdgac gefbac eabcdf ace bced ec ebagfd adgbcfe | ce fcdga baecfg cea
+adebg gdfcae gb acegd abg begc bdaef bfgcda dgaefbc abgdec | bg cbafgd ecbg gba
+bfacde egfadcb cb fcdea eacbf cedb dcgeaf bgadfc abc ebgfa | adfebc dceb bdcafe efdac
+faegbd dgfce dcgafe fgadecb bcgd bcfge bfaec gb cdbfeg fgb | aecfb fbg fcgade dafgbec
+fgacbe fc ebcadg agfdb fdbca cagbdfe cdfe abcde fcb bfacde | cabed cfde bfdac dgbaf
+defabc gfcbe fea bdacfg adgecf fabce ae aebd bfecdga cdafb | fea ea bgfaced bead
+dfgae dcafe dce dgebfca abfcd ecab bfcdea gcfebd gafcbd ec | bcdagf cde gbedcfa bfdace
+cea gaedfb acdf ac ebacgd gefdabc befda cfbae egcfb efcabd | gcaebfd cbaef dfac ca
+gebac befadgc bedcgf cgb gc eagbdc cebaf cadg bgfaed aegdb | cbg cbg cbgadef acdg
+gfcdeb bfdegca beac befda bcf dcfga fbcda cb adecfb gbefda | fbc dbafc cbf cfb
+cbdfeag becagf acgeb be cgbda gfcdbe efba acfeg ecb eadgcf | aebf eb bagcfe eb
+febg aecbdg fedacb ecg ge fbgaedc dfgce afcgd fcbed efcdgb | aedcbg baegcfd ecg bedcf
+bcfedg gdbcae febd fcbag fgbcd bd ecdgfa dbc fdcagbe gdcfe | efgbadc fcbedg abfecgd cgbedf
+feagc cb dcgeabf fadbgc cgfdae fbdea feagcb bcafe cbeg bac | bgce bc cgadbf cba
+efagbd dageb dcgbeaf gc acg gdecab gecd fdbca gbcfea acbgd | eagbd egfabcd gfbace gca
+ae cgae dea eacgfd fadgc gfebd afdcbe dfeag acbfgd dacbgef | dgbafc cbdfgae ae ead
+egb gcfe abcfdeg begfcd abcdfg dabec eg bdfcg edgcb bedagf | bdecg beg gbdcef dbeac
+fcgae dfcebag aefdb geacbf cda dagbcf cd adcfe fedacg gdce | bcdafg adefb fdeba gecbfa
+afegd gadfb fcgadeb gbcade gdabef cefgad dfbe bdg fagbc bd | dabegc bfgca bd dgb
+dfceba faecd bd afbedgc ebad fcadb bafgc dcb efgdcb gfaedc | faedc bead egcdbaf bd
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2021/data/day9.expected

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2021/day1/day1_rs/Cargo.lock

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-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "day1_rs"
-version = "0.1.0"
-dependencies = [
- "itertools",
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-
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-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69ddb889f9d0d08a67338271fa9b62996bc788c7796a5c18cf057420aaed5eaf"
-dependencies = [
- "either",
-]

2021/day1/rust/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "day1_rs"
+name = "rust_2021_1"
 version = "0.1.0"
 edition = "2021"
 

2021/day1/rust/src/main.rs

@@ -1,3 +1,4 @@
+#![warn(clippy::pedantic)]
 use itertools::Itertools;
 use std::io::{self, BufRead};
 
@@ -18,7 +19,7 @@ fn main() {
         count_increasing(
             numbers
                 .windows(3)
-                .map(|window| -> usize { window.iter().sum() })
+                .map(|window| window.iter().sum::<usize>())
         )
     );
 }

2021/day1/vhdl/.gitignore

@@ -0,0 +1,2 @@
+day1
+workdir/

2021/day1/vhdl/day1.vhdl

@@ -0,0 +1,11 @@
+configuration day1 of sim is
+	for aoc_stdio
+		for dut_inst : dut
+			use entity work.top generic map (
+				MAX_INPUT_DIGITS => 6,
+				OUTPUT_WIDTH => OUTPUT_WIDTH,
+				STEP => STEP
+			);
+		end for;
+	end for;
+end configuration;

2021/day1/vhdl/run.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+source "$COMMON_DIR/vhdl_run.sh"
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+DUT_OUTPUT_WIDTH=12
+test_sim day1 top.vhdl

2021/day1/vhdl/sim.gtkw

@@ -0,0 +1,55 @@
+[*]
+[*] GTKWave Analyzer v3.3.109 (w)1999-2020 BSI
+[*] Wed Dec  1 13:50:21 2021
+[*]
+[dumpfile] "/home/xiretza/dev/advent-of-code/2021/day1/vhdl/workdir/sim1.ghw"
+[dumpfile_mtime] "Wed Dec  1 13:48:36 2021"
+[dumpfile_size] 235598
+[savefile] "/home/xiretza/dev/advent-of-code/2021/day1/vhdl/sim.gtkw"
+[timestart] 11375200000
+[size] 1920 1035
+[pos] -1 -1
+*-26.627251 11673700000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
+[treeopen] top.
+[treeopen] top.sim.
+[treeopen] top.sim.dut_inst.
+[treeopen] top.sim.dut_inst.window.
+[sst_width] 221
+[signals_width] 173
+[sst_expanded] 1
+[sst_vpaned_height] 296
+@28
+top.sim.clk
+top.sim.reset
+@420
+top.sim.char_in
+@200
+-
+@420
+top.sim.dut_inst.window[0][0]
+top.sim.dut_inst.window[0][1]
+top.sim.dut_inst.window[0][2]
+top.sim.dut_inst.window[0][3]
+top.sim.dut_inst.window[0][4]
+top.sim.dut_inst.window[0][5]
+@200
+-
+@420
+top.sim.dut_inst.window[1][0]
+top.sim.dut_inst.window[1][1]
+top.sim.dut_inst.window[1][2]
+@421
+top.sim.dut_inst.window[1][3]
+@420
+top.sim.dut_inst.window[1][4]
+top.sim.dut_inst.window[1][5]
+@200
+-
+@28
+top.sim.input_valid
+@22
+#{top.sim.output[11:0]} top.sim.output[11] top.sim.output[10] top.sim.output[9] top.sim.output[8] top.sim.output[7] top.sim.output[6] top.sim.output[5] top.sim.output[4] top.sim.output[3] top.sim.output[2] top.sim.output[1] top.sim.output[0]
+@28
+top.sim.output_valid
+[pattern_trace] 1
+[pattern_trace] 0

2021/day1/vhdl/top.vhdl

@@ -0,0 +1,71 @@
+library ieee;
+use ieee.std_logic_1164.all,
+	ieee.numeric_std.all;
+
+use work.util.all;
+
+entity top is
+	generic (
+		MAX_INPUT_DIGITS : positive;
+		OUTPUT_WIDTH : positive;
+		STEP : natural range 1 to 2
+	);
+	port (
+		clk : in std_logic;
+		reset : in std_logic;
+
+		char  : in character;
+		input_valid : in std_logic;
+
+		output : out unsigned(OUTPUT_WIDTH-1 downto 0);
+		output_valid : out std_logic
+	);
+end entity;
+
+architecture arch of top is
+	function WINDOW_SIZE return positive is
+	begin
+		if STEP = 1 then
+			return 1;
+		else
+			return 3;
+		end if;
+	end function;
+
+	type number_t is array(MAX_INPUT_DIGITS-1 downto 0) of digit_t;
+	type window_t is array(WINDOW_SIZE-1 downto 0) of number_t;
+
+	signal current_number : number_t;
+	signal window : window_t;
+
+	signal window_count : natural range 0 to WINDOW_SIZE := 0;
+begin
+	process(clk)
+	begin
+		if rising_edge(clk) then
+			if reset then
+				output <= (others => '0');
+				output_valid <= '1';
+				window_count <= 0;
+			elsif input_valid then
+				output_valid <= '0';
+
+				if char = LF then
+					if window_count = WINDOW_SIZE then
+						if current_number > window(window'high) then
+							output <= output + 1;
+						end if;
+						output_valid <= '1';
+					else
+						window_count <= window_count + 1;
+					end if;
+
+					window <= window(window'high-1 downto 0) & current_number;
+					current_number <= (others => 0);
+				else
+					current_number <= current_number(current_number'left-1 downto 0) & char_to_digit(char);
+				end if;
+			end if;
+		end if;
+	end process;
+end architecture;

2021/day10/day10.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+import sys
+
+if __name__ == '__main__':
+    syntax_check_score = 0
+    autocomplete_scores = []
+    for line in sys.stdin.readlines():
+        stack = []
+        corrupted = False
+
+        for c in line.strip():
+            if c in '([{<':
+                stack.append({'(': ')', '[': ']', '{': '}', '<': '>'}[c])
+            elif stack.pop() != c:
+                syntax_check_score += {')': 3, ']': 57, '}': 1197, '>': 25137}[c]
+                corrupted = True
+                break
+
+        if corrupted: continue
+
+        autocomplete_score = 0
+        for c in stack[::-1]:
+            autocomplete_score *= 5
+            autocomplete_score += {')': 1, ']': 2, '}': 3, '>': 4}[c]
+        autocomplete_scores.append(autocomplete_score)
+
+    print(syntax_check_score)
+    autocomplete_scores.sort()
+    print(autocomplete_scores[len(autocomplete_scores)//2])

2021/day12/rust/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "rust_2021_12"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2021/day12/rust/src/main.rs

@@ -0,0 +1,59 @@
+#![warn(clippy::pedantic)]
+use std::{
+    collections::{HashMap, HashSet},
+    io::{stdin, BufRead},
+};
+
+type Point<'a> = &'a str;
+
+fn walk<'a>(
+    connections: &HashMap<Point<'a>, HashSet<Point<'a>>>,
+    visited: &[Point<'a>],
+    extra_cave: Option<Point<'a>>,
+    from: Point<'a>,
+) -> usize {
+    let mut res = 0;
+
+    let mut visited = Vec::from(visited);
+    visited.push(from);
+
+    for target in &connections[from] {
+        if *target == "end" {
+            res += 1;
+            continue;
+        }
+
+        let is_uppercase = target.chars().all(|c| c.is_ascii_uppercase());
+        let was_visited = visited.contains(target);
+
+        if is_uppercase || !was_visited {
+            res += walk(connections, &visited, extra_cave, target);
+        } else if extra_cave.is_none() {
+            res += walk(connections, &visited, Some(target), target);
+        }
+    }
+
+    res
+}
+
+fn main() {
+    let lines: Vec<_> = stdin().lock().lines().collect::<Result<_, _>>().unwrap();
+
+    let connections: HashMap<Point, HashSet<Point>> =
+        lines.iter().fold(HashMap::new(), |mut map, line| {
+            let mut parts = line.split('-');
+            let p1 = parts.next().unwrap();
+            let p2 = parts.next().unwrap();
+
+            if p1 != "end" && p2 != "start" {
+                map.entry(p1).or_default().insert(p2);
+            }
+            if p2 != "end" && p1 != "start" {
+                map.entry(p2).or_default().insert(p1);
+            }
+            map
+        });
+
+    println!("{}", walk(&connections, &[], Some(""), "start"));
+    println!("{}", walk(&connections, &[], None, "start"));
+}

2021/day13/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2021_13"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7.1.0"

2021/day13/rust/src/main.rs

@@ -0,0 +1,83 @@
+#![warn(clippy::pedantic)]
+use std::collections::HashSet;
+use std::io::{stdin, Read};
+
+use nom::bytes::complete::tag;
+use nom::character::complete::{anychar, newline, u32};
+use nom::combinator::{map, map_opt};
+use nom::multi::many1;
+use nom::sequence::{preceded, separated_pair, terminated};
+
+type Input<'a> = &'a str;
+type IResult<'a, T> = nom::IResult<Input<'a>, T>;
+
+type Point = (usize, usize);
+
+fn point(i: Input) -> IResult<Point> {
+    separated_pair(map(u32, |i| i as usize), tag(","), map(u32, |i| i as usize))(i)
+}
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+enum Fold {
+    X(usize),
+    Y(usize),
+}
+
+fn fold(i: Input) -> IResult<Fold> {
+    map_opt(
+        preceded(
+            tag("fold along "),
+            separated_pair(anychar, tag("="), map(u32, |i| i as usize)),
+        ),
+        |(dimension, position)| match dimension {
+            'x' => Some(Fold::X(position)),
+            'y' => Some(Fold::Y(position)),
+            _ => None,
+        },
+    )(i)
+}
+
+fn input(i: Input) -> IResult<(Vec<Point>, Vec<Fold>)> {
+    separated_pair(
+        many1(terminated(point, newline)),
+        newline,
+        many1(terminated(fold, newline)),
+    )(i)
+}
+
+fn do_fold(points: impl Iterator<Item = Point>, fold: Fold) -> HashSet<Point> {
+    let transform = |x, n| if x < n { x } else { n - (x - n) };
+    points
+        .map(|(x, y)| match fold {
+            Fold::X(n) => (transform(x, n), y),
+            Fold::Y(n) => (x, transform(y, n)),
+        })
+        .collect()
+}
+
+fn main() {
+    let mut data = String::new();
+    stdin().lock().read_to_string(&mut data).unwrap();
+    let (points, folds) = input(&data).unwrap().1;
+
+    let mut points: HashSet<_> = points.into_iter().collect();
+    let mut folds = folds.into_iter();
+
+    points = do_fold(points.into_iter(), folds.next().unwrap());
+    println!("{}", points.len());
+
+    for fold in folds {
+        points = do_fold(points.into_iter(), fold);
+    }
+
+    for row in 0..=points.iter().map(|&(_, y)| y).max().unwrap() {
+        for col in 0..=points.iter().map(|&(x, _)| x).max().unwrap() {
+            if points.contains(&(col, row)) {
+                print!("#");
+            } else {
+                print!(".");
+            }
+        }
+        println!();
+    }
+}

2021/day14/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2021_14"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7.1.0"

2021/day14/rust/src/main.rs

@@ -0,0 +1,152 @@
+#![warn(clippy::pedantic)]
+use nom::{
+    bytes::complete::{tag, take_till},
+    character::complete::{anychar, newline},
+    combinator::recognize,
+    multi::many1,
+    sequence::{pair, separated_pair, terminated},
+};
+use std::collections::BTreeMap;
+use std::io::{stdin, Read};
+use std::ops::Add;
+
+type Input<'a> = &'a str;
+type IResult<'a, T> = nom::IResult<Input<'a>, T>;
+
+type Rule = ((char, char), char);
+
+fn rule(i: Input) -> IResult<Rule> {
+    separated_pair(pair(anychar, anychar), tag(" -> "), anychar)(i)
+}
+
+fn parse_input(i: Input) -> IResult<(&str, Vec<Rule>)> {
+    separated_pair(
+        terminated(recognize(take_till(|c| c == '\n')), newline),
+        newline,
+        many1(terminated(rule, newline)),
+    )(i)
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+struct Counter<T> {
+    counts: BTreeMap<T, usize>,
+}
+
+impl<T: Ord> Counter<T> {
+    pub fn new() -> Self {
+        Self {
+            counts: BTreeMap::new(),
+        }
+    }
+
+    pub fn push(&mut self, el: T) {
+        *self.counts.entry(el).or_insert(0) += 1;
+    }
+
+    pub fn most_common(&self) -> Option<(&T, usize)> {
+        self.counts
+            .iter()
+            .map(|(el, count)| (el, *count))
+            .max_by_key(|&(_, count)| count)
+    }
+
+    pub fn least_common(&self) -> Option<(&T, usize)> {
+        self.counts
+            .iter()
+            .map(|(el, count)| (el, *count))
+            .min_by_key(|&(_, count)| count)
+    }
+}
+
+impl<T: Ord> FromIterator<T> for Counter<T> {
+    fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self {
+        let mut counts = Self::new();
+        for el in iter {
+            counts.push(el);
+        }
+        counts
+    }
+}
+
+impl<T: Ord + Copy> Add<&Counter<T>> for Counter<T> {
+    type Output = Self;
+
+    fn add(mut self, other: &Self) -> Self {
+        for (el, count) in &other.counts {
+            *self.counts.entry(*el).or_insert(0) += count;
+        }
+        self
+    }
+}
+
+impl<T: Ord> Add for Counter<T> {
+    type Output = Self;
+
+    fn add(mut self, other: Self) -> Self {
+        for (el, count) in other.counts {
+            *self.counts.entry(el).or_insert(0) += count;
+        }
+        self
+    }
+}
+
+#[derive(Clone, Debug)]
+struct LetterCounter {
+    rules: BTreeMap<(char, char), char>,
+    counts: BTreeMap<(char, char, usize), Counter<char>>,
+}
+
+impl LetterCounter {
+    pub fn new(rules: BTreeMap<(char, char), char>) -> Self {
+        let mut counts = BTreeMap::new();
+        for &(left, right) in rules.keys() {
+            counts.insert((left, right, 0), Counter::from_iter([left]));
+        }
+        Self { rules, counts }
+    }
+
+    pub fn get_counts_right_exclusive(
+        &mut self,
+        left: char,
+        right: char,
+        depth: usize,
+    ) -> &Counter<char> {
+        #[allow(clippy::map_entry)] // lifetimes don't work out
+        if !self.counts.contains_key(&(left, right, depth)) {
+            let middle = self.rules[&(left, right)];
+            let counts_left = self
+                .get_counts_right_exclusive(left, middle, depth - 1)
+                .clone();
+            let counts_right = self.get_counts_right_exclusive(middle, right, depth - 1);
+            let counts = counts_left + counts_right;
+            self.counts.insert((left, right, depth), counts);
+        }
+        &self.counts[&(left, right, depth)]
+    }
+}
+
+fn main() {
+    let mut input = String::new();
+    stdin().lock().read_to_string(&mut input).unwrap();
+
+    let (input, rules) = parse_input(&input).unwrap().1;
+
+    let rules: BTreeMap<_, _> = rules.into_iter().collect();
+    let chars: Vec<_> = input.chars().collect();
+
+    let mut counter = LetterCounter::new(rules);
+
+    let mut run = |steps| {
+        let mut totals = chars.windows(2).fold(Counter::new(), |counts, x| {
+            counts + counter.get_counts_right_exclusive(x[0], x[1], steps)
+        });
+        totals.push(*chars.last().unwrap());
+
+        println!(
+            "{:?}",
+            totals.most_common().unwrap().1 - totals.least_common().unwrap().1
+        );
+    };
+    run(10);
+    run(40);
+}

2021/day16/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2021_16"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7.1.0"

2021/day16/rust/src/main.rs

@@ -0,0 +1,208 @@
+#![warn(clippy::pedantic)]
+
+use std::{
+    io::{stdin, Read},
+    ops::ControlFlow,
+};
+
+use nom::{
+    bits::complete as bits,
+    error::ParseError,
+    multi::{many0, many_m_n},
+    Offset,
+};
+use nom::{combinator::map, sequence::pair};
+use parsers::fold_till;
+
+mod parsers;
+
+type Input<'a> = (&'a [u8], usize);
+type IResult<'a, T, E> = nom::IResult<Input<'a>, T, E>;
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+struct Packet {
+    version: u8,
+    typ: PacketType,
+}
+
+impl Packet {
+    pub fn parse<'a, E: ParseError<Input<'a>>>(i: Input<'a>) -> IResult<'a, Packet, E> {
+        map(
+            pair(bits::take(3_usize), PacketType::parse),
+            |(version, typ)| Packet { version, typ },
+        )(i)
+    }
+
+    pub fn version_sum(&self) -> usize {
+        usize::from(self.version)
+            + match self.typ {
+                PacketType::Literal(_) => 0,
+                PacketType::Operation {
+                    ref sub_packets, ..
+                } => sub_packets.iter().map(Packet::version_sum).sum(),
+            }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+enum PacketType {
+    Literal(usize),
+    Operation {
+        operator: Operator,
+        sub_packets: Vec<Packet>,
+    },
+}
+
+impl PacketType {
+    pub fn parse<'a, E: ParseError<Input<'a>>>(i: Input<'a>) -> IResult<'a, PacketType, E> {
+        let (i, operator) = map(bits::take(3_usize), |type_id: u8| {
+            Operator::try_from(type_id)
+        })(i)?;
+
+        match operator {
+            Ok(operator) => map(Self::parse_sub_packets, |sub_packets| {
+                PacketType::Operation {
+                    operator,
+                    sub_packets,
+                }
+            })(i),
+            Err(_) => map(Self::parse_literal_value, PacketType::Literal)(i),
+        }
+    }
+
+    fn parse_sub_packets<'a, E: ParseError<Input<'a>>>(
+        i: Input<'a>,
+    ) -> IResult<'a, Vec<Packet>, E> {
+        enum LengthType {
+            Bits(usize),
+            Packets(usize),
+        }
+
+        impl LengthType {
+            pub fn parse<'a, E: ParseError<Input<'a>>>(i: Input<'a>) -> IResult<'a, Self, E> {
+                let (i, length_type_id) = bits::take(1_usize)(i)?;
+                match length_type_id {
+                    0 => map(bits::take(15_usize), LengthType::Bits)(i),
+                    1 => map(bits::take(11_usize), LengthType::Packets)(i),
+                    _ => unreachable!(),
+                }
+            }
+        }
+
+        let (i, length_type) = LengthType::parse(i)?;
+        match length_type {
+            LengthType::Packets(n) => many_m_n(n, n, Packet::parse)(i),
+            LengthType::Bits(n) => {
+                // manual implementation of something like the following:
+                // map_parser(recognize(bits::take(n)), many0(Packet::parse))(i)
+
+                let new_byte_offset = (n + i.1) / 8;
+                let new_bit_offset = (n + i.1) % 8;
+
+                let subpackets_input = (&i.0[..=new_byte_offset], i.1);
+                let (subpackets_end, subpackets) = many0(Packet::parse)(subpackets_input)?;
+
+                let new_input = (&i.0[new_byte_offset..], new_bit_offset);
+                assert_eq!(i.0.offset(subpackets_end.0), i.0.offset(new_input.0));
+                assert_eq!(subpackets_end.1, new_input.1);
+
+                Ok((new_input, subpackets))
+            }
+        }
+    }
+
+    fn parse_literal_value<'a, E: ParseError<Input<'a>>>(i: Input<'a>) -> IResult<'a, usize, E> {
+        fold_till(
+            pair(bits::take(1_usize), bits::take(4_usize)),
+            || 0,
+            |acc, (marker, bits): (u8, usize)| {
+                (if marker == 1 {
+                    ControlFlow::Continue
+                } else {
+                    ControlFlow::Break
+                })((acc << 4) | bits)
+            },
+        )(i)
+    }
+
+    pub fn evaluate(&self) -> usize {
+        match self {
+            Self::Literal(n) => *n,
+            Self::Operation {
+                operator,
+                sub_packets,
+            } => operator.evaluate(sub_packets.iter().map(|p| p.typ.evaluate())),
+        }
+    }
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+enum Operator {
+    Sum,
+    Product,
+    Minimum,
+    Maximum,
+    GreaterThan,
+    LessThan,
+    EqualTo,
+}
+
+impl Operator {
+    pub fn evaluate(self, mut operands: impl Iterator<Item = usize>) -> usize {
+        match self {
+            Self::Sum => operands.sum(),
+            Self::Product => operands.product(),
+            Self::Minimum => operands.min().unwrap(),
+            Self::Maximum => operands.max().unwrap(),
+            Self::GreaterThan => usize::from(operands.next().unwrap() > operands.next().unwrap()),
+            Self::LessThan => usize::from(operands.next().unwrap() < operands.next().unwrap()),
+            Self::EqualTo => usize::from(operands.next().unwrap() == operands.next().unwrap()),
+        }
+    }
+}
+
+impl TryFrom<u8> for Operator {
+    type Error = ();
+
+    fn try_from(value: u8) -> Result<Self, Self::Error> {
+        match value {
+            0 => Ok(Self::Sum),
+            1 => Ok(Self::Product),
+            2 => Ok(Self::Minimum),
+            3 => Ok(Self::Maximum),
+            5 => Ok(Self::GreaterThan),
+            6 => Ok(Self::LessThan),
+            7 => Ok(Self::EqualTo),
+            _ => Err(()),
+        }
+    }
+}
+
+fn main() {
+    let bytes: Vec<u8> = stdin()
+        .lock()
+        .bytes()
+        .filter_map(|c| char::from(c.unwrap()).to_digit(16))
+        .map(|c| {
+            #[allow(clippy::cast_possible_truncation)] // a hex digit always fits in a u8
+            let c = c as u8;
+            c
+        })
+        .scan(None, |prev, n| {
+            Some(match *prev {
+                Some(i) => {
+                    *prev = None;
+                    Some(i | n)
+                }
+                None => prev.replace(n << 4),
+            })
+        })
+        .flatten()
+        .collect();
+
+    let packet = Packet::parse::<nom::error::Error<_>>((&bytes, 0))
+        .unwrap()
+        .1;
+    println!("{}", packet.version_sum());
+    println!("{}", packet.typ.evaluate());
+}

2021/day16/rust/src/parsers.rs

@@ -0,0 +1,41 @@
+use std::ops::ControlFlow;
+
+use nom::{
+    error::{ErrorKind, ParseError},
+    Err, InputLength, Parser,
+};
+
+pub fn fold_till<I, O, E, St, P, F, G>(
+    mut p: P,
+    mut init: F,
+    mut acc: G,
+) -> impl FnMut(I) -> nom::IResult<I, St, E>
+where
+    I: InputLength,
+    E: ParseError<I>,
+    P: Parser<I, O, E>,
+    F: FnMut() -> St,
+    G: FnMut(St, O) -> ControlFlow<St, St>,
+{
+    move |i| {
+        let mut res = init();
+        let mut input = i;
+
+        loop {
+            let len = input.input_len();
+            let (i, o) = p.parse(input)?;
+
+            if i.input_len() == len {
+                return Err(Err::Error(E::from_error_kind(i, ErrorKind::Many0)));
+            }
+
+            match acc(res, o) {
+                ControlFlow::Continue(next) => {
+                    res = next;
+                    input = i;
+                }
+                ControlFlow::Break(res) => return Ok((i, res)),
+            }
+        }
+    }
+}

2021/day2/day2.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+import sys
+
+if __name__ == '__main__':
+    x = 0
+    y = 0
+    z = 0
+    for line in sys.stdin.readlines():
+        dir, amount = line.split()
+        amount = int(amount)
+        if dir == 'forward':
+            x += amount
+            z += y * amount
+        elif dir == 'down':
+            y += amount
+        elif dir == 'up':
+            y -= amount
+    print(x*y)
+    print(x*z)

2021/day22/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2021_22"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7.1.0"

2021/day22/rust/src/main.rs

@@ -0,0 +1,167 @@
+#![warn(clippy::pedantic)]
+use std::{
+    cmp::{max, min},
+    io::{stdin, BufRead},
+    ops::RangeInclusive,
+};
+
+use nom::{
+    branch::alt,
+    bytes::complete::tag,
+    character::complete::i64,
+    combinator::map,
+    error::ParseError,
+    sequence::{pair, preceded, separated_pair, terminated, tuple},
+};
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+struct Cuboid {
+    x: RangeInclusive<i64>,
+    y: RangeInclusive<i64>,
+    z: RangeInclusive<i64>,
+}
+
+fn range_len(range: &RangeInclusive<i64>) -> u64 {
+    (range.end() - range.start() + 1).try_into().unwrap_or(0)
+}
+
+fn range_intersect(a: &RangeInclusive<i64>, b: &RangeInclusive<i64>) -> RangeInclusive<i64> {
+    max(*a.start(), *b.start())..=min(*a.end(), *b.end())
+}
+
+impl Cuboid {
+    pub fn cubes(&self) -> u64 {
+        range_len(&self.x) * range_len(&self.y) * range_len(&self.z)
+    }
+
+    pub fn intersect(&self, other: &Cuboid) -> Option<Cuboid> {
+        let x = range_intersect(&self.x, &other.x);
+        let y = range_intersect(&self.y, &other.y);
+        let z = range_intersect(&self.z, &other.z);
+
+        if x.is_empty() || y.is_empty() || z.is_empty() {
+            None
+        } else {
+            Some(Self { x, y, z })
+        }
+    }
+
+    pub fn in_small_range(&self) -> bool {
+        let check = |r: &RangeInclusive<i64>| -50 <= *r.start() && *r.end() <= 50;
+        check(&self.x) && check(&self.y) && check(&self.z)
+    }
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+enum CubeState {
+    Off,
+    On,
+}
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+struct CuboidSpec {
+    state: CubeState,
+    cuboid: Cuboid,
+}
+
+impl CuboidSpec {
+    fn parse<'input, E: ParseError<&'input str>>(
+        input: &'input str,
+    ) -> nom::IResult<&'input str, Self, E> {
+        let dimension_range = |dim| {
+            map(
+                preceded(
+                    pair(tag(dim), tag("=")),
+                    separated_pair(i64, tag(".."), i64),
+                ),
+                |(start, end)| start..=end,
+            )
+        };
+
+        map(
+            separated_pair(
+                alt((
+                    map(tag("off"), |_| CubeState::Off),
+                    map(tag("on"), |_| CubeState::On),
+                )),
+                tag(" "),
+                map(
+                    tuple((
+                        terminated(dimension_range("x"), tag(",")),
+                        terminated(dimension_range("y"), tag(",")),
+                        dimension_range("z"),
+                    )),
+                    |(x, y, z)| Cuboid { x, y, z },
+                ),
+            ),
+            |(state, cuboid)| Self { state, cuboid },
+        )(input)
+    }
+}
+
+fn count_intersecting(first: &Cuboid, rest: impl IntoIterator<Item = Cuboid>) -> u64 {
+    let intersections = rest.into_iter().filter_map(|c| c.intersect(first));
+    count_union(intersections, Entry::Use)
+}
+
+enum Entry {
+    Ignore(Cuboid),
+    Use(Cuboid),
+}
+
+fn count_union<T>(cuboids: impl IntoIterator<Item = T>, get_cuboid: impl Fn(T) -> Entry) -> u64 {
+    cuboids
+        .into_iter()
+        .scan(Vec::new(), |previous, x| match get_cuboid(x) {
+            Entry::Ignore(c) => {
+                previous.push(c);
+                Some(0)
+            }
+            Entry::Use(c) => {
+                let count = c.cubes() - count_intersecting(&c, previous.iter().cloned());
+                previous.push(c);
+                Some(count)
+            }
+        })
+        .sum()
+}
+
+fn main() {
+    let mut small_range = None;
+    let mut lit_cubes: u64 = 0;
+    let mut placed_cuboids: Vec<CuboidSpec> = Vec::new();
+
+    for line in stdin().lock().lines() {
+        let spec = CuboidSpec::parse::<()>(&line.unwrap()).unwrap().1;
+
+        if !spec.cuboid.in_small_range() {
+            small_range.get_or_insert(lit_cubes);
+        }
+
+        // all overlaps with previous cuboids
+        let intersections = placed_cuboids.iter().cloned().filter_map(|mut s| {
+            s.cuboid = s.cuboid.intersect(&spec.cuboid)?;
+            Some(s)
+        });
+
+        // count the cubes that overlap with currently-ON cubes
+        let overlap = count_union(intersections.rev(), |s| {
+            (if s.state == CubeState::On {
+                Entry::Use
+            } else {
+                Entry::Ignore
+            })(s.cuboid)
+        });
+
+        if let CubeState::On = spec.state {
+            let size = spec.cuboid.cubes();
+            lit_cubes += size;
+        };
+        lit_cubes -= overlap;
+
+        placed_cuboids.push(spec);
+    }
+
+    println!("{}", small_range.unwrap());
+    println!("{lit_cubes}");
+}

2021/day3/day3.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+import sys
+from collections import Counter
+
+def most_common(ns, pos):
+    c = Counter(n[pos] for n in ns)
+    num_zeros = c['0']
+    num_ones = c['1']
+    if num_ones >= num_zeros:
+        return '1'
+    else:
+        return '0'
+
+def least_common(ns, pos):
+    return '0' if most_common(ns, pos) == '1' else '1'
+
+def find_criteria(ns, criteria):
+    ns = ns
+    i = 0
+    while len(ns) > 1:
+        x = criteria(ns, i)
+        ns = [n for n in ns if n[i] == x]
+        i += 1
+    return ns[0]
+
+if __name__ == '__main__':
+    lines = [line.strip() for line in sys.stdin.readlines()]
+
+    line_len = len(lines[0])
+    gamma = ''.join(most_common(lines, n) for n in range(line_len))
+    epsilon = ''.join(least_common(lines, n) for n in range(line_len))
+    print(int(gamma, 2) * int(epsilon, 2))
+
+    oxygen_rating = find_criteria(lines, most_common)
+    co2_rating = find_criteria(lines, least_common)
+
+    print(int(oxygen_rating, 2) * int(co2_rating, 2))

2021/day3/rust/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "rust_2021_3"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2021/day3/rust/src/main.rs

@@ -0,0 +1,58 @@
+#![warn(clippy::pedantic)]
+use std::io::{stdin, BufRead};
+
+fn find_rating(num_bits: usize, mut range: &[usize], keep_most_common_bit: bool) -> usize {
+    for idx in (0..num_bits).rev() {
+        if range.len() == 1 {
+            break;
+        }
+
+        let nth_bit = |x| x >> idx & 1;
+        let partition_point = range.iter().position(|&n| nth_bit(n) == 1).unwrap();
+        let center_bit = nth_bit(range[range.len() / 2]);
+
+        let keep_first_half = if keep_most_common_bit {
+            center_bit == 0
+        } else {
+            center_bit == 1
+        };
+
+        if keep_first_half {
+            range = &range[..partition_point];
+        } else {
+            range = &range[partition_point..];
+        }
+    }
+
+    range[0]
+}
+
+fn main() {
+    let lines: Vec<_> = stdin().lock().lines().map(Result::unwrap).collect();
+
+    let num_bits = lines[0].len();
+
+    let gamma: usize = (0..num_bits)
+        .map(|i| {
+            lines
+                .iter()
+                .filter(|line| line.chars().nth(i).unwrap() == '1')
+                .count()
+        })
+        .map(|n| if n > lines.len() / 2 { 1 } else { 0 })
+        .reduce(|accum, bit| accum << 1 | bit)
+        .unwrap();
+    let sigma = !gamma & ((1 << num_bits) - 1);
+
+    println!("{}", gamma * sigma);
+
+    let mut numbers: Vec<_> = lines
+        .iter()
+        .map(|n| usize::from_str_radix(n, 2).unwrap())
+        .collect();
+    numbers.sort_unstable();
+
+    let oxygen = find_rating(num_bits, &numbers, true);
+    let co2 = find_rating(num_bits, &numbers, false);
+    println!("{}", oxygen * co2);
+}

2021/day4/day4.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+import time
+
+import sys
+
+def board_won(board):
+    for row in board:
+        if all(x is None for x in row):
+            return True
+    for i in range(len(board[0])):
+        if all(row[i] is None for row in board):
+            return True
+    return False
+
+if __name__ == '__main__':
+    lines = [line.strip() for line in sys.stdin.readlines()]
+
+    draws = [int(n) for n in lines[0].split(',')]
+
+    boards = []
+    for i in range(2, len(lines), 6):
+        boards.append([[int(n) for n in line.split()] for line in lines[i:i+5]])
+
+    wins = []
+    for draw in draws:
+        for board_idx, board in enumerate(boards):
+            if board is None:
+                continue
+            for row in board:
+                try:
+                    idx = row.index(draw)
+                    row[idx] = None
+                except ValueError:
+                    pass
+            if board_won(board):
+                wins.append(draw * sum(n for row in board for n in row if n is not None))
+                boards[board_idx] = None
+
+    print(wins[0])
+    print(wins[-1])

2021/day5/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2021_5"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+vector2d = "2.2.0"

2021/day5/rust/src/main.rs

@@ -0,0 +1,114 @@
+#![warn(clippy::pedantic)]
+use std::{
+    convert::Infallible,
+    io::{stdin, BufRead},
+    str::FromStr,
+};
+use vector2d::Vector2D;
+
+#[derive(Copy, Clone, Debug)]
+struct Line {
+    start: Vector2D<usize>,
+    end: Vector2D<usize>,
+}
+
+impl Line {
+    pub fn is_straight(&self) -> bool {
+        self.start.x == self.end.x || self.start.y == self.end.y
+    }
+
+    pub fn expand(&self) -> impl Iterator<Item = Vector2D<usize>> {
+        LinePoints::new(self)
+    }
+}
+
+impl FromStr for Line {
+    type Err = Infallible;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let parts: Vec<_> = s.split(' ').collect();
+        let start: Vec<_> = parts[0].split(',').map(|n| n.parse().unwrap()).collect();
+        let end: Vec<_> = parts[2].split(',').map(|n| n.parse().unwrap()).collect();
+
+        Ok(Line {
+            start: Vector2D::new(start[0], start[1]),
+            end: Vector2D::new(end[0], end[1]),
+        })
+    }
+}
+
+struct LinePoints {
+    pos: Vector2D<isize>,
+    step: Vector2D<isize>,
+    points_left: usize,
+}
+
+impl LinePoints {
+    fn new(line: &Line) -> Self {
+        let start = line.start.as_isizes();
+        let end = line.end.as_isizes();
+        let delta = end - start;
+        let step = Vector2D::new(delta.x.signum(), delta.y.signum());
+
+        let len = usize::max(delta.x.unsigned_abs(), delta.y.unsigned_abs());
+
+        Self {
+            pos: start,
+            step,
+            points_left: len + 1,
+        }
+    }
+}
+
+impl Iterator for LinePoints {
+    type Item = Vector2D<usize>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.points_left == 0 {
+            return None;
+        }
+
+        let current = self.pos;
+        self.pos += self.step;
+        self.points_left -= 1;
+        Some(current.as_usizes())
+    }
+}
+
+fn count_overlaps<'a>(it: impl IntoIterator<Item = &'a Line>) -> usize {
+    let points: Vec<(usize, usize)> = it
+        .into_iter()
+        .flat_map(Line::expand)
+        .map(Into::into)
+        .collect();
+
+    let (max_x, max_y) = points.iter().fold((0, 0), |(acc_x, acc_y), &(x, y)| {
+        (usize::max(acc_x, x), usize::max(acc_y, y))
+    });
+
+    let mut field = vec![vec![0_usize; max_y + 1]; max_x + 1];
+
+    let mut hits = 0;
+    for (x, y) in points {
+        let point = &mut field[x][y];
+        if *point == 1 {
+            hits += 1;
+        }
+        *point += 1;
+    }
+    hits
+}
+
+fn main() {
+    let lines: Vec<Line> = stdin()
+        .lock()
+        .lines()
+        .map(|s| s.unwrap().parse().unwrap())
+        .collect();
+
+    println!(
+        "{}",
+        count_overlaps(lines.iter().filter(|line| line.is_straight()))
+    );
+    println!("{}", count_overlaps(&lines));
+}

2021/day6/day6.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+import sys
+import functools
+
+@functools.cache
+def spawns(days):
+    acc = days//7
+    days -= 9
+    acc += sum(spawns(days-x*7) for x in range(days//7))
+    return acc
+
+if __name__ == '__main__':
+    inp = [int(i) for i in sys.stdin.readline().split(',')]
+
+    def do(days):
+        spawns.cache_clear()
+        return sum(1 + spawns(days + (6 - fish)) for fish in inp)
+    print(do(80))
+    print(do(256))

2021/day7/day7.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+import sys
+
+if __name__ == '__main__':
+    positions = [int(i) for i in sys.stdin.readline().split(',')]
+
+    def calc(movement_cost):
+        return min(
+            sum(movement_cost(abs(position-target)) for position in positions)
+            for target in range(min(positions), max(positions)+1)
+        )
+
+    print(calc(lambda n: n))
+    print(calc(lambda n: n * (n+1)//2))

2021/day7/day7_fast.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+import sys
+
+if __name__ == '__main__':
+    positions = [int(i) for i in sys.stdin.readline().split(',')]
+
+    def calc(starting_guess, distance_cost):
+        def target_cost(target):
+            return sum(distance_cost(abs(position-target)) for position in positions)
+
+        target = starting_guess(positions)
+        current_cost = target_cost(target)
+
+        for i in (-1, 1):
+            while (next_cost := target_cost(target+i)) < current_cost:
+                current_cost = next_cost
+                target += i
+
+        return current_cost
+
+    positions.sort()
+    print(calc(
+        lambda positions: positions[len(positions)//2],
+        lambda n: n
+    ))
+    print(calc(
+        lambda positions: int(sum(positions)/len(positions)),
+        lambda n: n * (n+1)//2
+    ))

2021/day8/bruteforce.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+
+import sys
+import itertools
+
+def parse(line):
+    inputs, outputs = [[num.strip() for num in nums.strip().split(' ')] for nums in line.split('|')]
+    return (inputs, outputs)
+
+if __name__ == '__main__':
+    inp = [parse(i) for i in sys.stdin.readlines()]
+
+    permutations = list(''.join(s) for s in itertools.permutations('abcdefg'))
+    segments = [
+        'abcefg',
+        'cf',
+        'acdeg',
+        'acdfg',
+        'bcdf',
+        'abdfg',
+        'abdefg',
+        'acf',
+        'abcdefg',
+        'abcdfg',
+    ]
+
+    acc1 = 0
+    acc2 = 0
+    for (inputs, outputs) in inp:
+        acc1 += sum(len(output) in (2,3,4,7) for output in outputs)
+
+        for permutation in permutations:
+            trans = str.maketrans(permutation, 'abcdefg')
+
+            def translate_segments(digit):
+                return ''.join(sorted(digit.translate(trans)))
+
+            if all(translate_segments(digit) in segments for digit in inputs):
+                acc2 += int(''.join(
+                    str(segments.index(
+                        translate_segments(digit)
+                    )) for digit in outputs
+                ))
+                break
+    print(acc1)
+    print(acc2)

2021/day8/fast.py

@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+
+import sys
+from collections import Counter
+
+if __name__ == '__main__':
+    acc1 = 0
+    acc2 = 0
+    for line in sys.stdin.readlines():
+        inputs, outputs = line.split('|')
+        counter = Counter(c for cs in inputs for c in cs)
+        digits = [{17: 1, 25: 7, 30: 4, 34: 2, 37: 5, 39: 3, 41: 6, 42: 0, 49: 8, 45: 9}[sum(counter[c] for c in output)] for output in outputs.strip().split()]
+        acc1 += sum(digit in (1, 4, 7, 8) for digit in digits)
+        acc2 += int(''.join(str(digit) for digit in digits))
+    print(acc1)
+    print(acc2)

2021/day8/rust/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "rust_2021_8"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+arrayvec = "0.7.2"
+
+[dev-dependencies]
+criterion = "0.3.5"
+
+[[bench]]
+name = "unscramble"
+harness = false

2021/day8/rust/benches/unscramble.rs

@@ -0,0 +1,40 @@
+use std::{fs, path::PathBuf};
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use rust_2021_8::{v1, v2, v3};
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    let mut group = c.benchmark_group("unscramble");
+
+    let mut data_file = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    data_file.push("inputs/input.txt");
+
+    let input = fs::read_to_string(data_file).unwrap();
+    let lines: Vec<&str> = input.lines().collect();
+
+    group.bench_function("v1", |b| {
+        b.iter(|| {
+            for line in &lines {
+                let _ = v1::unscramble(black_box(line));
+            }
+        })
+    });
+    group.bench_function("v2", |b| {
+        b.iter(|| {
+            for line in &lines {
+                let _ = v2::unscramble(black_box(line));
+            }
+        })
+    });
+    group.bench_function("v3", |b| {
+        b.iter(|| {
+            for line in &lines {
+                let _ = v3::unscramble(black_box(line));
+            }
+        })
+    });
+    group.finish();
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);

2021/day8/rust/inputs/input.txt

@@ -0,0 +1,200 @@
+bgafcde gfcd agc ebdgac adfceb bafeg efgca cgdfae cg ecadf | fabgced gc agc cdfg
+gbdacfe gcabfd cdb dcfba bfacg cgad fadeb feabcg cd gcbfed | bdagcef dcb cdag gbfca
+dgcbafe dbfca fbaed be cedb gefad dcfeab facdgb eba gbface | eb gadfcbe cfbad gfbeca
+ebc cb aedbf agcef badecg gaebfc bcgf adbcfge ceabf daecgf | cb bce efdab ecbaf
+fedbc cebad gfcbd fec gcdfab ecbfga dacgbfe gfed fe gefbdc | bfecag cef egdf fgde
+bafedc baefg dbfga daegcb gae egbcfa eg cefab fgce decbafg | abdgf cgfe cedgba befga
+dcba fagbed cgbfed dgfbeac da dag acbgde fcaeg becgd acgde | agd bacd dga gbecad
+ec aebgcfd fecd bagfec efagd edfgab cgdfea dgcab ecdga eac | ce ec ce gbacefd
+aegdbfc fe dacbf aefbgd aecgb cdfe ebadcf ecbfa cbfdga aef | dfce fe fcde afebdgc
+bgaf gcbad cagdfb gb dfbeca degfcb bfadc cfgeadb bdg agcde | fdegacb acbefgd bdg gafb
+gdecba dcae ec dbfeag bgead dgbce gec cgefab dcbgefa cdbfg | afdbgce agbfde abcgefd ec
+gacbefd fgbedc egafdc adf fcbae afedb ad bfeadg adbg dfgeb | ad degcfa ad dfbge
+fadebc baef eadfcg ebgdc eda cfgabd afbdc ea edcab cdgbefa | aefb ead ea ebaf
+badgecf caefd aebfdc fecbdg fadcg fed de ebad abgecf bceaf | ed gcfebd aebd gfdca
+bcdae aefcbg fgdea bf cdabegf adcebf fcbd fbead afb begadc | gbcafe faegbc fba eabdc
+bfcdeg ecd eabgc adeg ed dbaec bcfad ecabfg dbgcfea dbacge | de bdfcaeg ecgfbd bcdea
+deacf bf eagfdb gfecadb facbeg bfa cbdage abfce fbcg gecab | aebcf ecfagb abegfd bgeac
+eag dgbecf gdfae caed dfebgca ea ebcgfa dfbag gecfda dgcfe | ae ea deac fcdega
+edbga egdabc cgfdbe gabfe efcdgab gbdefa fb abdf fbg gecfa | cgaebd cbgdea acgfe begdca
+cgfedb egbdc agcfd cdagb eabgdf ab abce adb agcebfd dabegc | ba bda abd deagfb
+fc agfbce fdebg dgafeb ebfdc cbf cfedgba fdcg gcefdb eacdb | gbfaec fgcbed gbceafd bedagf
+bdcgefa acdfbe ed gbcea cfgbad ecbda edfcag afcbd ead bdef | dfbe de dea dea
+gfbeca gcefdb fegacd cgbda fbde ed bgedc begcf agdcefb ced | gbacd ced dec bcegfd
+dgbacf gfabec agd egdaf badcegf ad ecgaf defgb cade dfegca | cdae dga bgcaef ad
+dcf cfadb bcagd afebd fbgdec egfcbda fcea gfeabd fc ebdfac | gabdc ebfad aefc eacbdf
+cfgdba fcdab cgfbade adeb afdebc egcfdb de aedfc cfage edf | ed eadb dgebcf cefdabg
+bcae befga dgebfc fbagce cbefg agb fcedgab ba bdgacf dgfae | beca dcaegbf gab geafb
+dgafbec fedba cbega aebfdc eabfdg bdgfce edc fdac cd adceb | abedf dfeabg dc gdbefc
+adegfbc gbedcf cfabd gacedb abcfe fdbacg dgabc df dfga bfd | fdag dbf dafg fd
+dfbcag ebfcad ed agecdb bfacd egbfa badfe afbcegd aed cdef | afebd ecdf cfed eadfbgc
+fca dbcaf ebdcf fadbg cdbefa adec ac dacbgfe fbcdge cgefba | ac edca edac ca
+agdfce cedbfag agc dcbaeg gc bcdga bgdfa cfaebd ebdac cbge | ceadb becg ebadc gc
+aefbc aecdg efgcad cdebag bcg agfdbc bceag bdge bg fecdgab | bgecda bcdaeg gb caebf
+cfgebd acedf ag gbad gcfbad acg bgecfa bdfcg gbadecf cdfga | dgba dgcbf gac bgfdc
+cdgbafe cdgbe gd agde bcaged dfebc geacb cdg bgeacf gbdcfa | efgcba edag gecfdba cgd
+bcg bcaf cegdaf dfacg dgacb fgcebda bgdcaf efbcgd bc gadbe | gcb bcg caebdfg cfab
+eg cdgfae aecfd fgbaedc gbdfc facdeb cfegd ceag efg efdgab | fge acefbgd egf efg
+fcdg gefda cf edabc cedgfa cfa acefd cfebadg gdbafe bgecfa | fc fca cfabged fca
+ed bcadegf egdfb fgcdb edbafg facbeg abegf deba fadgec dge | eadb ged eadb adfegb
+bgedc cf cefadg ecbgdf gbfae cbdf fcg ecbgad abfgced becfg | bdcf dbceg fgcbde cdbeg
+cg gcaf defcag cdefg gdafe dgfabe gec dabegfc bcegad ebdcf | feadg degcf gcaf dcgefa
+fdeac gdcebf daecbg bgfec fdeagbc gca gecfa aefcbg fbag ag | ga decfagb ag agfb
+bc fbdc bagecdf gfdcab acdgb dcaeg dbgfa cgbaef ebgfda gbc | bdfc cb cfbd fbcd
+efagc bafegd abecg eab eb fgbeca gbedcfa bfec fcgade cgbad | abfgdce degacf fcaebg cdabfeg
+egbfcd afde ecgab fac fa edabcf cbdagfe afbec cfabgd fdebc | deaf feda cgbdfa fa
+gbafd defca ebcf eb cefbad dcebag dcgfae edfab deb bgedcfa | be deb gdbafce be
+afdgceb cf gbdeaf acdbfe abcef acf deafb fedgac cdbf cgeba | fac cfdb bdfcae fdcb
+cfdba ca afbgd eabc cda afbcdeg cfedb ecfgbd efcgad bcfeda | bfgad abec abce caeb
+cfebad debfacg acgfeb cab fedcb afcdb cdae febcdg ac dgbaf | bac ca faecbgd cgbfae
+eg dfcegb dge abedcgf facdg bafdgc degacf dafeg agec adebf | egd fegda fedbcag eagdf
+age gcbad feacb cgbdfae ge gfbe agebc fcadeg cbafde cgebaf | fagecdb bfeg baecg fceabd
+bfcdge fgcbead ebdgac ba dagbfe gab dabc bcegd gface cebga | cbda gbedc egcbafd gab
+dbcegfa fadceg fcage bcage gb bdagfc abdec gbfe bgafce bcg | ebfdagc ebfg ebgf egfb
+gcdefa bagf dgebf bdefc bgcafde dbefga edabg gfe gf dcgeba | fg efg agfb gebfd
+fabdc gdeabf dag gbace adcgb gd eagfcb gaedbc egdfabc egdc | adgbc bcadf gd cedfabg
+deagcf ce dfcaeb gfadceb bgade cde daegc cgdafb gadcf efcg | dbaecf fdecbga ce ecd
+dfcbag abceg db dgcefa dabec bcegdaf cdb bdef defac cfbdea | gdafec dcb febd bdef
+ead fgceabd edgcaf da fgda fgcea ecdgb cgaed fdbace cbagef | ad eafcdb bfecagd ad
+ab caefg agbcef efacb gecdfba ecfagd fbdec bdecga cba fgab | eafgc abfg cdagbfe dcageb
+afbcge ebafcgd dacegb cfbea afbg agc egcfa ag cgdfe bdceaf | adfbceg fagb gfba aecgbf
+acg cdegbf ecfadg cgdab fcbadg cdbgfae ca agedb cbgdf facb | cdeabfg ca afbc dagfec
+dca dbfae bagdcf aceg ac afdegc cegfd fcedgb cbdaegf cedfa | dac acge cedgf cfdbgae
+gdcafe ega cgbfde cgba afdbe bacegd ga begdc dcebagf edgab | abgc ga bacg bdacge
+begfda gdafce fg gdbf gbaced agf decagbf aebdg gabfe cebfa | fag acdbeg agcdfe dgbefca
+gfcdbea fecab cbadge afgce gc fgdace fdcg cga eagdf eagbfd | efgacbd gc dgfc dacbeg
+gdbefc feadg dbagef afd abde gebfd cefga bdgafc da efdacbg | cbegfda adf bade cdgfbe
+aefbdgc eabcfg cgefa degbf cedfg cd cadg cde fgecad fecadb | dbfegca egcdabf gcda dc
+baed bcgda abdegc decag ega dgbfaec gacbfe ae cgfde dbacgf | aebd age ea bgdecfa
+abecg faegcd egfcd efcga cdaf baedgf efa fcbaedg fcgedb fa | afe af aef fa
+abgfce cbedgaf fbedc eacdfb dcf fd faegcd fecba dfba gdceb | faecdg gdceb dfc gcbde
+fgce fgadb egdabc edg defbg eg bfced fdbace bdfgeac gbcfde | gdcbfea deg afbedc dgcaeb
+eg dgcfe efdgab bfdec aecg acbegfd bdcafg adcfg efg daefgc | fge aecg gfe ecagfdb
+acdfe bedcfg abgec cfeabd aedbfcg fecdag fg fcg afecg gdaf | cdaefg fdag cgf gadcfbe
+aedc gbdac cbagfe bfdcg gdbfea acb cbgaed ac eadgb gecadfb | gbfdc gbdaec fbgeadc decabg
+gbc afgdb cfbdga badgef gadbce egabcdf geacf bcdf cb gabfc | fgaec fcagdeb gbcfa bc
+cfgabd cfdbe eafgdc badcfeg dgfab cbag eafbdg gc dfgbc cdg | fagecd cgd afdbge cg
+eadcbf fcag gc gbc gadcefb gebad febdgc egcbaf ecbag bacef | dgbfec egadcbf gcfa bcegfda
+acbeg acgedb eg dgbfce cdagb cgdbaf gaed bafce cfebadg ecg | dbgac eabcf eabfdgc eagd
+bgefda eacg abdcfe eabcd abegcd ebg cbedg cbfdg dgfecab eg | ecag eg ge afebcd
+dgecbf bg dfcba abge gadebc edagc bcg ecdfga fbgecad bgcad | cgb gbea ebgcdf gbae
+dcabg gdfbca debc aed ed fabeg afdecg gbeda caegbd agbfcde | fcbdgea cedb dea efcdagb
+edbcafg cgaed gc gbdc acfebd cge gceabd abecd afegd bgafce | gc facegbd edbcaf cg
+gadbce gbdaf acebgf bd abcgfd edfga cdfb gbd cfgab dgafbce | gfdab fdegbac eabcfdg bgcdae
+eacgf fb cegbdf dgbfca cfb dfba agfcb cgabd ebcdgfa gedacb | acbdg dbaf ceafg bf
+gebac egdacf fdceg daef af gfa dagfbc fcgbead afgce cebfgd | afg bcage gcdeabf cgfea
+cdabfg fgbec gcdafe ceafgb egc ec beac febdg bdegcfa fabcg | cafegdb beca ecgbfa bace
+gda feabdg ebgaf bgdfc bgfcae bfeagdc edab ad adgbf fceagd | gad ad afgbde dfaebg
+bfc bgfced edbfag fcea cf afgbdce cgbda abgef fcgba aebcfg | bcf efac eacf fc
+bdeag bgdcf ec ebgdfac gcbde gaec dec cafdeb afdebg cebdag | gcbfd agedb acfdbe ecd
+befad gd edgbf bcgafd cebgfd abgcef gfd ecgd cgdfaeb ecfgb | cegd cdeg efadbgc egcdbaf
+gfdbae bc cegbfd gadcf cdaefgb gfbed fbcgd beagcd gbc becf | gedcfba edcagb fbcgdae cfbe
+ecf cbdaf bdfcaeg fagdec efba bcdfe bfecda gcedb ef cbadgf | ef fbedc dbceg edgfcab
+cabde ae ecfdba cbdfe faed dabcg cfbgaed gbfcea begdcf abe | adfe aeb cabgd ae
+gefcabd ecabd gebafc ag ecfgbd gacdbf dfcbg fdga cagbd acg | gebcadf gefbac dgaf dagf
+bgde efcgd cebgfa dbacgf cgfeb gdc fdaec dfbceg gd fegcadb | efbcadg cgd gbdcfa facebg
+gefcbd bgfdcea fg dcbag fbgcd fgeb defcag fcg becfad dfcbe | cefbda cfg fegbdc fg
+bcfed bcfdge aedbfg fad decbfa facge cdba efdca ad dbfagce | eabfgd fadce begfdca gecdbaf
+edfgbca dbega fdb gfecab fd ebcfda cfda feabd becfa edgbfc | df ebgad cabegfd adcf
+daegbc fbacg edfg befdac efbcd edafbgc cdg bcgfd fdegcb gd | dg becdf dbeafcg gadefcb
+egdacf gde ed dfebcag acgdfb cfadg agebdf cgeab gecda dfce | fedagc gabfecd eadgfbc cfgebda
+dfcea afbde fdgac gefbac eabcdf ace bced ec ebagfd adgbcfe | ce fcdga baecfg cea
+adebg gdfcae gb acegd abg begc bdaef bfgcda dgaefbc abgdec | bg cbafgd ecbg gba
+bfacde egfadcb cb fcdea eacbf cedb dcgeaf bgadfc abc ebgfa | adfebc dceb bdcafe efdac
+faegbd dgfce dcgafe fgadecb bcgd bcfge bfaec gb cdbfeg fgb | aecfb fbg fcgade dafgbec
+fgacbe fc ebcadg agfdb fdbca cagbdfe cdfe abcde fcb bfacde | cabed cfde bfdac dgbaf
+defabc gfcbe fea bdacfg adgecf fabce ae aebd bfecdga cdafb | fea ea bgfaced bead
+dfgae dcafe dce dgebfca abfcd ecab bfcdea gcfebd gafcbd ec | bcdagf cde gbedcfa bfdace
+cea gaedfb acdf ac ebacgd gefdabc befda cfbae egcfb efcabd | gcaebfd cbaef dfac ca
+gebac befadgc bedcgf cgb gc eagbdc cebaf cadg bgfaed aegdb | cbg cbg cbgadef acdg
+gfcdeb bfdegca beac befda bcf dcfga fbcda cb adecfb gbefda | fbc dbafc cbf cfb
+cbdfeag becagf acgeb be cgbda gfcdbe efba acfeg ecb eadgcf | aebf eb bagcfe eb
+febg aecbdg fedacb ecg ge fbgaedc dfgce afcgd fcbed efcdgb | aedcbg baegcfd ecg bedcf
+bcfedg gdbcae febd fcbag fgbcd bd ecdgfa dbc fdcagbe gdcfe | efgbadc fcbedg abfecgd cgbedf
+feagc cb dcgeabf fadbgc cgfdae fbdea feagcb bcafe cbeg bac | bgce bc cgadbf cba
+efagbd dageb dcgbeaf gc acg gdecab gecd fdbca gbcfea acbgd | eagbd egfabcd gfbace gca
+ae cgae dea eacgfd fadgc gfebd afdcbe dfeag acbfgd dacbgef | dgbafc cbdfgae ae ead
+egb gcfe abcfdeg begfcd abcdfg dabec eg bdfcg edgcb bedagf | bdecg beg gbdcef dbeac
+fcgae dfcebag aefdb geacbf cda dagbcf cd adcfe fedacg gdce | bcdafg adefb fdeba gecbfa
+afegd gadfb fcgadeb gbcade gdabef cefgad dfbe bdg fagbc bd | dabegc bfgca bd dgb
+dfceba faecd bd afbedgc ebad fcadb bafgc dcb efgdcb gfaedc | faedc bead egcdbaf bd
+cgb bdcfeg cg gdbeca cgef gdbcfea febdg fdcgb dafgeb bacfd | cgfe cgb gc gfec
+cadgfb cefdbag cg begacf dfgbea bgc adgbf bgcad fdgc eabcd | cg fgceab ebdacgf ecbdgaf
+bgdefc decfg cfedga cefgb bfdcea edgfacb bgcd fegba ceb cb | cfgbe dcaefg cbgfe dbcg
+gefbda acde gcbaf cd cfd bdcgfae daefg gdcbfe cgefad agdcf | gcebafd efgcda cfd aecd
+gedfc cead egbfda fgcdabe de fcgea gfdbc deg cagdef gebacf | deg bfgead gdfbc gde
+fbgae bfecg dbcaef gdcaeb cbfdge gbc decgbfa edbfc fdgc gc | gc gbcdef fdcg gfcbe
+fc caf cadbe dgabfc gebdfa fecg fagbe cebaf acbegdf cgabfe | egcf ceagbf gcfe ebgafc
+abfcd cgbfa bcgafd gadefc abfde cdf dc agfbced cbegfa gcbd | cd cfd fgeacd cdf
+bdgae gfbce cbagfd gedbcaf ebcgd gbcefa dc fcde cegdfb dbc | dcegb fgdcbea deabcfg bdc
+ebcagf df bgcdefa fdceba cgdf dbacgf eadbg afd abgcf gabfd | ceagdbf dagcbf fd dcfbaeg
+dga cadbgef efbcgd bgdca eacd cedbga gdbec gdeabf fbacg da | dag adg edac edgcb
+febcg gbadce aedbcf acbed cbgae cag gadb degbcfa ga fcgdae | bgad abdgfec acbed acg
+gdcaf dcbfag gdefa abcdg bcfg cf fedgacb dbaegc fcedba afc | cf afc gcfb eafdgbc
+gdcaef gcabfd bcefgda cde gcdfb gbecfd ec dfaeb cefbd egbc | egbfdc ce gbdcfa afbcgd
+fdea fga fa adcgbef abfcge gbeda fagdb abedgc cgbdf bdefag | fa gaecfb beadgc cbfgd
+ba gcbafd decgba bfga fbadc bda dfbeacg ecfgbd cedfa fdbgc | gfab gbdfc adb ba
+bd ecdgab aedfg bde fbcae decfba cgafbe fdeab dbfc fdgceba | db dbe cdfb bdgfaec
+bd gcefbd ebcd dafbgc ebfgd decgaf edcfg fbd fbaeg gafcdbe | cbeagdf cebd cedb cedb
+edagf cdaefbg ead efgdb bgafed cfdag bfea dabgce dfbceg ae | gcafd feab dgfca feba
+gecfda bgcdf ba abd edgabf bcdeaf gedfa fdbga baeg abegcdf | ab bad bda fgebcda
+egadb bec dbefga cbafg cageb ce ebdgca dceg gdebfca cfbead | ec ebc egdc ecb
+cbgfe fadcbg agde cbdge egdacb degcabf bed faebdc ed dcabg | eadg facdbe bcdeg debfac
+fabe fb bgf edcgaf bgacd bcfegd fcdegab adgef afbdg gbfade | bfg dbcgfae edacbgf bf
+bcdfe becgd cbafegd decag geb dgfb bfcade dgcefb bg gfbaec | bdgce gb dcbge gdfb
+egcadf bfg fgbdac faedg ebaf gcedb begdf fb adfebg cafdgeb | faedbcg bafcgde bf becgd
+edafgb ecbgd gcdfaeb ef gbfadc cgfade gef fdegc fgcda efca | agfecdb dcabgef ef dgcaf
+cbdgea fegcad bagdc abdfgc age gebac afbcdge egbfc adeb ea | ae ega ecagbd gbacd
+ecdfb edafbc fe afdcb efc degcb aedf acbgfd ecgfab fecabdg | fe dbegcaf fe cedgfba
+edbfgc caeb ca cbdafg bcdge bgcdae edfga eacgd gca cgabfed | facebdg ca aedbgc ac
+gfeba aegc cbfega ea bea dfgbe edfacgb fadgbc gbafc aefcdb | gbecfda bcdfag gcea afcegdb
+fgcea dc egfdba cdafe gfdecb fbaedc ebdfa dacb bdafgec dec | ced bcfdaeg cefda fagcbed
+dbefa defacg agd dcbfg bdfagce ga efgbdc abgc fdgab bacfdg | cbga dga gedcfab fdabcg
+eacbf eac dfagbce cfga fbgea ca bfced agebdc fbedga fcbega | dabfgce gfca ebfacg gbaecf
+cfagb cgfdea gdc agfcbe fdeacbg bcfdg dg badg fdgacb bcdef | cgd gfacb gd gdba
+cfga gbadef decabfg cbged baefcd ca cda dbagf fdbcag dbgca | afgebdc bdgeaf gafc cfag
+cgfbd cdafgb gbcead dbg afdb bgecf adfcg ecbgdfa bd gdacfe | fgacd cgdfa bdaf dbg
+abf fb febd dbafg febcga gbead egdacb fedgba fbagdce gdcaf | bf fb dbceafg fba
+fd dgfabe ecafdg deabcg cbefa fed dbgea bdefa bgdf dbfgeca | fde bdfg fdgb gfeabcd
+fgeadb abfed dgfbcea bafgd agcfd gfb bdfaec bg dgbe cegbaf | egdb fegadbc dcgaf bg
+fdabc acfbgde dg fcage cdfgab dfebag dga gdafc cdgb eafbcd | gfcad aegdcbf dag afbdc
+dbfe efdag fgdcae cgbfaed bgfead acebg fb bgf egabf abfcdg | ebdf gfb ebfd fgabed
+bafegd egcfadb fbc bc fcebgd becaf afbed agecf beacfd bdca | cb dbca cfb afgbcde
+gbefdc bfead gfcdab gbedca fc cabegdf bedfc fdc cefg cgbde | fdbceg cgfe fc bdcaefg
+fg dbfea fedagbc cageb aecfdg dfgb dbfaec gafbed begaf gaf | gfecad dgcfea dafeb gfbd
+dabfg eb egacdfb bfcdga faedc gdeb fbagec aeb bgefad dfeba | bafdcg gfbda gebd be
+adb dgeabc bfdg gaecfd afdgc cbdgfa bd dcgeafb dafbc bafce | bd fcagbde defagcb dbfg
+fge bagcf dfaebg fgebc eg cdeg fabcedg bedcf dfcegb acfbde | egcd ecgd cebafd cgdaefb
+bafdgc gecabf caegf ae beaf gfacb decgf cfedbag aec cdabeg | dcfge ae egcdafb eca
+fcgba ebgaf agefd agcdfb beac gdbcfe beg bcdfgae gacfbe eb | cfebgd abecdgf ceab abcfdge
+abcgfd bac feabd adcgeb fcgb bc debgcfa fbdac gceafd fagdc | fbcg gcfad afbed cfbda
+afdbegc dea abegd agecbd afbgdc dgbfe cabgd afcbed ceag ae | daecbfg cdbag acge ea
+ebdcg cbfg cdgebf bge adbec eabgdf baecfdg fgadce gedfc bg | dcbae fbcg beg gfbc
+cfbga cefabg ebfca abeg ae bcedfga gbacfd eac bdefc dcafge | abge fedbc bacgf eac
+eb aedcg dbfcge cegdbaf gfbe bed dagcbf dacebf dcfgb dbceg | gbef dbe fegb eb
+cgfe ced dgeba ce cegad abedcf cdaefg cfagbd cadfg gbcedaf | ecgad gcabefd dfbcgae ce
+dbagc afdc dgfaeb bcfage gbedfac cafbdg cdgeb ac cab gdafb | cab dafbcg dacf acdgfeb
+dgbae bfa eafgb bafegd fgaec bcfadg fb dbfe egbadc gbecadf | cdegbfa dagfcbe fdeb fab
+be aecgdf gbdacef bagfc bdef beagf beg dbefag gedfa cbgade | be eb afegb beg
+cfdagb ac gcfdae cbad bfgda bcfedga begcf afc ebafdg cfbga | deagcf abdc ca cagfb
+eg efdbga adbcfg ebfcga aefgd bdfga adcbgef defac gbed gae | edbg gedb bfdeag dbcgaf
+bacegf gbfca cfa ceab gafeb ca gcfdb gadfec dbafge gbdfaec | caf fbgedac fca afc
+fbagde cbeg afecg gdaecbf fedcga gab efacbg gb acbfg cfdba | gba ecbg agb abgcf
+abfg dafcgb gcafd bdcgaef ab cba ebdcf bgdaec cfaegd fcbda | acb ecadbg cgdabe fgab
+agcbd cegdba feagb fd daf gbfad bacdfg cgdfabe dcefab fgcd | df dagbc fgcd fd
+gdfeabc bcd debaf cb gedfab bcefd edfgc bdceaf aecb cdgbfa | ebac beac cbea abce
+cbgdef eg beg dbgfc bfgcead gbefd efcg edgbca eabfd acbfdg | gbe gbe cefg gbe
+fedg begcad gdb bafdge gd egbcaf gdbaf bfacd eacgdbf eafgb | cbefag baegf gefcdab bedgac
+gbce dcafgb agfdceb efdac acg agcfe aefgb befagd cegfab gc | fbedgac abdefg cga cag
+gabc bceadf agfcd agd ag fcdgbea gabdef gedfc dbcfa agbfdc | gacb gad bgceadf cbgafde
+afedc fabced gfcbed feb cegdbaf dbfa ebfac dacfeg fb gbace | feb afdb ebf acfde
+cbed edgcf ecabdfg ceg cfbgd abgfdc gebfdc ec efbagc gedfa | ec decb ecdb gec
+egd gfbeac gedcb de dabgfe dcfbg cbefdag eadc dcegba acegb | ed adgfceb gde abcged
+efadcgb fbdce fagedc agebfd gbafe abedf da bgad ead ceagbf | efagb ecdbf ade aebcgfd
+cgeb bfaed cbedga cbaed bc bca afgcbd dgface bgfecda decga | fgadcb bca dabfe cab
+dgaec deagcf egf cdeabg abgdf gdfceab dfcbeg gfead efac ef | agebcd efdbcag aefc bgefcad
+fbeac gebcaf efa fgce bgfdea dgbcfae gcbdea adcbf ef egacb | gebfacd bfadcge ef eagbc
+acdbgfe adfg edfcbg efacb egacf gca dgaceb egdcf ga gefcda | fdga cfgae cga ga
+dfebcg gdaebf dagcf gbaecd dcgebfa bf cfbe bgf bgdce fdbgc | cgbefd bcfe gbf ecbf
+dcafeg ca acf fcdeb abcfdge facdgb bfagd dfaegb bagc dfbac | dfabgce dfaegc gbafde bacg
+cgefb cbe cfab afdbeg cb faebg gcfde cefbag ebadgc afdbgec | egbdcfa cbe cafb fecagbd

2021/day8/rust/src/lib.rs

@@ -0,0 +1,12 @@
+#![warn(clippy::pedantic)]
+#![deny(unsafe_op_in_unsafe_fn)]
+
+#[derive(PartialEq, Eq, Clone, Copy, Debug)]
+pub struct LineResult {
+    pub unique_digits: usize,
+    pub number: usize,
+}
+
+pub mod v1;
+pub mod v2;
+pub mod v3;

2021/day8/rust/src/main.rs

@@ -0,0 +1,23 @@
+#![warn(clippy::pedantic)]
+use rust_2021_8::{v3::unscramble, LineResult};
+use std::io::{stdin, BufRead};
+
+fn main() {
+    let result = stdin()
+        .lock()
+        .lines()
+        .map(|s| unscramble(&s.unwrap()))
+        .fold(
+            LineResult {
+                unique_digits: 0,
+                number: 0,
+            },
+            |a, b| LineResult {
+                unique_digits: a.unique_digits + b.unique_digits,
+                number: a.number + b.number,
+            },
+        );
+
+    println!("{}", result.unique_digits);
+    println!("{}", result.number);
+}

2021/day8/rust/src/v1.rs

@@ -0,0 +1,51 @@
+use std::collections::HashMap;
+
+use crate::LineResult;
+
+#[inline]
+fn lookup(n: usize) -> usize {
+    match n {
+        17 => 1,
+        25 => 7,
+        30 => 4,
+        34 => 2,
+        37 => 5,
+        39 => 3,
+        41 => 6,
+        42 => 0,
+        49 => 8,
+        45 => 9,
+        _ => unreachable!(),
+    }
+}
+
+#[inline]
+#[must_use]
+pub fn unscramble(line: &str) -> LineResult {
+    let mut parts = line.split('|');
+    let input = parts.next().unwrap();
+
+    let mut counts: HashMap<_, usize> = HashMap::new();
+    for c in input.chars() {
+        *counts.entry(c).or_default() += 1;
+    }
+
+    let digits: Vec<_> = parts
+        .next()
+        .unwrap()
+        .trim()
+        .split(' ')
+        .map(|s| s.chars().map(|c| counts[&c]).sum())
+        .map(lookup)
+        .collect();
+
+    LineResult {
+        unique_digits: digits.iter().filter(|d| [1, 4, 7, 8].contains(d)).count(),
+        number: digits
+            .iter()
+            .map(|&d| char::from_digit(d as u32, 10).unwrap())
+            .collect::<String>()
+            .parse()
+            .unwrap(),
+    }
+}

2021/day8/rust/src/v2.rs

@@ -0,0 +1,47 @@
+use crate::LineResult;
+use arrayvec::ArrayVec;
+
+const FREQ_TABLE: [usize; 50] = {
+    let mut tab = [0; 50];
+    tab[17] = 1;
+    tab[25] = 7;
+    tab[30] = 4;
+    tab[34] = 2;
+    tab[37] = 5;
+    tab[39] = 3;
+    tab[41] = 6;
+    tab[42] = 0;
+    tab[45] = 9;
+    tab[49] = 8;
+    tab
+};
+
+#[must_use]
+#[inline]
+pub fn unscramble(line: &str) -> LineResult {
+    let mut parts = line.split('|');
+    let input = parts.next().unwrap();
+
+    let mut counts = [0; 7];
+    for c in input.bytes() {
+        if (b'a'..=b'g').contains(&c) {
+            counts[c as usize - b'a' as usize] += 1;
+        }
+    }
+
+    let digits = parts
+        .next()
+        .unwrap()
+        .trim_start()
+        .split(' ')
+        .map(|s| s.bytes().map(|c| counts[c as usize - b'a' as usize]).sum())
+        .map(|n: usize| FREQ_TABLE[n])
+        .collect::<ArrayVec<_, 4>>()
+        .into_inner()
+        .unwrap();
+
+    LineResult {
+        unique_digits: digits.iter().filter(|d| [1, 4, 7, 8].contains(d)).count(),
+        number: digits.iter().fold(0, |acc, d| acc * 10 + d),
+    }
+}

2021/day8/rust/src/v3.rs

@@ -0,0 +1,64 @@
+use crate::LineResult;
+
+const FREQ_TABLE: [usize; 256] = {
+    let mut tab = [0; 256];
+    tab[17] = 1;
+    tab[25] = 7;
+    tab[30] = 4;
+    tab[34] = 2;
+    tab[37] = 5;
+    tab[39] = 3;
+    tab[41] = 6;
+    tab[42] = 0;
+    tab[45] = 9;
+    tab[49] = 8;
+    tab
+};
+
+#[must_use]
+#[inline]
+pub fn unscramble(line: &str) -> LineResult {
+    let mut bytes = line.bytes();
+
+    let mut counts = [0; 7];
+    loop {
+        match bytes.next().unwrap() {
+            c @ b'a'..=b'g' => {
+                counts[c as usize - b'a' as usize] += 1;
+            }
+            b'|' => break,
+            _ => {}
+        }
+    }
+
+    bytes.next();
+
+    let mut freq = 0;
+    let mut unique_digits = 0;
+    let mut number = 0;
+    loop {
+        let c = bytes.next();
+        match c {
+            Some(b' ') | None => {
+                let digit = FREQ_TABLE[freq & 0xff];
+                if [1, 4, 7, 8].contains(&digit) {
+                    unique_digits += 1;
+                }
+                number = number * 10 + digit;
+                freq = 0;
+                if c.is_none() {
+                    break;
+                }
+            }
+            Some(c @ b'a'..=b'g') => {
+                freq += counts[c as usize - b'a' as usize];
+            }
+            Some(_) => {}
+        }
+    }
+
+    LineResult {
+        unique_digits,
+        number,
+    }
+}

2021/day8/rust/tests/unscramble.rs

@@ -0,0 +1,72 @@
+use std::path::PathBuf;
+
+use rust_2021_8::{v1, v2, v3, LineResult};
+
+fn test_unscramble_with_input(f: fn(&str) -> LineResult, input: &[&str]) -> LineResult {
+    let mut result = LineResult {
+        unique_digits: 0,
+        number: 0,
+    };
+
+    for line in input {
+        let LineResult {
+            unique_digits,
+            number,
+        } = f(line);
+        result.unique_digits += unique_digits;
+        result.number += number;
+    }
+
+    return result;
+}
+
+fn test_unscramble(f: fn(&str) -> LineResult) {
+    let test_file = |name| {
+        let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+        path.push("inputs/");
+        path.push(name);
+
+        let input = std::fs::read_to_string(path).unwrap();
+        let input: Vec<_> = input.lines().collect();
+        test_unscramble_with_input(f, &input)
+    };
+
+    assert_eq!(
+        test_file("example.txt"),
+        LineResult {
+            unique_digits: 26,
+            number: 61229
+        }
+    );
+
+    assert_eq!(
+        test_file("input.txt"),
+        LineResult {
+            unique_digits: 543,
+            number: 994266
+        }
+    );
+
+    assert_eq!(
+        test_file("large.txt"),
+        LineResult {
+            unique_digits: 159946,
+            number: 498570828
+        }
+    );
+}
+
+#[test]
+pub fn test_unscramble_v1() {
+    test_unscramble(v1::unscramble)
+}
+
+#[test]
+pub fn test_unscramble_v2() {
+    test_unscramble(v2::unscramble)
+}
+
+#[test]
+pub fn test_unscramble_v3() {
+    test_unscramble(v3::unscramble)
+}

2021/day9/clean.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+
+from collections import Counter
+from dataclasses import dataclass
+import math
+import sys
+from typing import Optional, Tuple
+
+@dataclass
+class Point:
+    height: int
+    low_point: Optional[Tuple[int, int]]
+
+class Grid:
+    def __init__(self, data):
+        self.data = data
+        self.rows = len(data)
+        self.cols = len(data[0])
+
+    def get(self, x, y):
+        if 0 <= x < self.rows and 0 <= y < self.cols:
+            return self.data[x][y]
+        else:
+            return None
+
+    def find_low_point(self, x, y):
+        current = self.get(x, y)
+        if current is None:
+            raise ValueError
+
+        if current.low_point is not None:
+            return current.low_point
+        if current.height == 9:
+            return None
+
+        for dx, dy in ((-1, 0), (1, 0), (0, -1), (0, 1)):
+            target = self.get(x+dx, y+dy)
+            if target is not None:
+                if target.height < current.height:
+                    current.low_point = self.find_low_point(x+dx, y+dy)
+                    return current.low_point
+        return (x, y)
+
+
+if __name__ == '__main__':
+    grid = Grid([
+        [
+            Point(height=int(n), low_point=None)
+            for n in i.strip()
+        ]
+        for i in sys.stdin.readlines()
+    ])
+
+    counts = Counter()
+    for x in range(grid.rows):
+        for y in range(grid.cols):
+            low_point = grid.find_low_point(x, y)
+            if low_point is not None:
+                counts.update([low_point])
+
+    print(sum(grid.get(x, y).height + 1 for x, y in counts.keys()))
+    print(math.prod(c for _, c in counts.most_common(3)))

2021/day9/dirty.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import sys
+import itertools
+
+def walk_up(grid, x_orig, y_orig):
+    rows = len(grid)
+    cols = len(grid[0])
+    current = grid[x_orig][y_orig]
+    points = set()
+    for dx in (-1, 0, +1):
+        for dy in (-1, 0, +1):
+            if (dx == 0) == (dy == 0):
+                continue
+            x = x_orig + dx
+            y = y_orig + dy
+            if 0 <= x < rows and 0 <= y < cols:
+                if current < grid[x][y] < 9:
+                    points.add((x, y))
+                    points |= walk_up(grid, x, y)
+    return points
+
+
+if __name__ == '__main__':
+    inp = [[int(n) for n in i.strip()] for i in sys.stdin.readlines()]
+
+    rows = len(inp)
+    cols = len(inp[0])
+    acc = 0
+    sizes = []
+    for x, row in enumerate(inp):
+        for y, n in enumerate(row):
+            if y > 0 and row[y-1] <= n:
+                continue
+            if y < cols-1 and row[y+1] <= n:
+                continue
+            if x > 0 and inp[x-1][y] <= n:
+                continue
+            if x < rows-1 and inp[x+1][y] <= n:
+                continue
+            points = walk_up(inp, x, y)
+            points.add((x, y))
+            sizes.append(len(points))
+            acc += n + 1
+    sizes.sort()
+    print(acc)
+    acc2 = 1
+    for x in sizes[-3:]:
+        acc2 *= x
+    print(acc2)

2022/data/day1.expected

@@ -0,0 +1,2 @@
+72017
+212520

2022/data/day10.expected

@@ -0,0 +1,7 @@
+13520
+###...##..###..#..#.###..####..##..###..
+#..#.#..#.#..#.#..#.#..#.#....#..#.#..#.
+#..#.#....#..#.####.###..###..#..#.###..
+###..#.##.###..#..#.#..#.#....####.#..#.
+#....#..#.#....#..#.#..#.#....#..#.#..#.
+#.....###.#....#..#.###..####.#..#.###..

2022/data/day10.input

@@ -0,0 +1,147 @@
+noop
+noop
+noop
+addx 6
+addx -1
+addx 5
+noop
+noop
+noop
+addx 5
+addx 11
+addx -10
+addx 4
+noop
+addx 5
+noop
+noop
+noop
+addx 1
+noop
+addx 4
+addx 5
+noop
+noop
+noop
+addx -35
+addx -2
+addx 5
+addx 2
+addx 3
+addx -2
+addx 2
+addx 5
+addx 2
+addx 3
+addx -2
+addx 2
+addx 5
+addx 2
+addx 3
+addx -28
+addx 28
+addx 5
+addx 2
+addx -9
+addx 10
+addx -38
+noop
+addx 3
+addx 2
+addx 7
+noop
+noop
+addx -9
+addx 10
+addx 4
+addx 2
+addx 3
+noop
+noop
+addx -2
+addx 7
+noop
+noop
+noop
+addx 3
+addx 5
+addx 2
+noop
+noop
+noop
+addx -35
+noop
+noop
+noop
+addx 5
+addx 2
+noop
+addx 3
+noop
+noop
+noop
+addx 5
+addx 3
+addx -2
+addx 2
+addx 5
+addx 2
+addx -25
+noop
+addx 30
+noop
+addx 1
+noop
+addx 2
+noop
+addx 3
+addx -38
+noop
+addx 7
+addx -2
+addx 5
+addx 2
+addx -8
+addx 13
+addx -2
+noop
+addx 3
+addx 2
+addx 5
+addx 2
+addx -15
+noop
+addx 20
+addx 3
+noop
+addx 2
+addx -4
+addx 5
+addx -38
+addx 8
+noop
+noop
+noop
+noop
+noop
+noop
+addx 2
+addx 17
+addx -10
+addx 3
+noop
+addx 2
+addx 1
+addx -16
+addx 19
+addx 2
+noop
+addx 2
+addx 5
+addx 2
+noop
+noop
+noop
+noop
+noop
+noop

2022/data/day11.expected

@@ -0,0 +1,2 @@
+66124
+19309892877

2022/data/day11.input

@@ -0,0 +1,55 @@
+Monkey 0:
+  Starting items: 75, 75, 98, 97, 79, 97, 64
+  Operation: new = old * 13
+  Test: divisible by 19
+    If true: throw to monkey 2
+    If false: throw to monkey 7
+
+Monkey 1:
+  Starting items: 50, 99, 80, 84, 65, 95
+  Operation: new = old + 2
+  Test: divisible by 3
+    If true: throw to monkey 4
+    If false: throw to monkey 5
+
+Monkey 2:
+  Starting items: 96, 74, 68, 96, 56, 71, 75, 53
+  Operation: new = old + 1
+  Test: divisible by 11
+    If true: throw to monkey 7
+    If false: throw to monkey 3
+
+Monkey 3:
+  Starting items: 83, 96, 86, 58, 92
+  Operation: new = old + 8
+  Test: divisible by 17
+    If true: throw to monkey 6
+    If false: throw to monkey 1
+
+Monkey 4:
+  Starting items: 99
+  Operation: new = old * old
+  Test: divisible by 5
+    If true: throw to monkey 0
+    If false: throw to monkey 5
+
+Monkey 5:
+  Starting items: 60, 54, 83
+  Operation: new = old + 4
+  Test: divisible by 2
+    If true: throw to monkey 2
+    If false: throw to monkey 0
+
+Monkey 6:
+  Starting items: 77, 67
+  Operation: new = old * 17
+  Test: divisible by 13
+    If true: throw to monkey 4
+    If false: throw to monkey 1
+
+Monkey 7:
+  Starting items: 95, 65, 58, 76
+  Operation: new = old + 5
+  Test: divisible by 7
+    If true: throw to monkey 3
+    If false: throw to monkey 6

2022/data/day12.expected

@@ -0,0 +1,2 @@
+504
+500

2022/data/day12.input

@@ -0,0 +1,41 @@
+abaaaaaaaaccccccccccccccccccaaaaaccccaaaaaaccccccccccccccccccccccaaaaaaaaaacccccccccccccccccccccccccccccccaaaaaccccccccccccccccccccccccccccccccccccccccccaaaaaa
+abaaaaaaaacccccccccccccccccccaaaaaccccaaaacccccaaaacccccccccccccccaaaaaaaaaacccccccccccccccccccccccccccccaaaaaaccccccccccccccccccccccccccccccccccccccccccccaaaa
+abccaaaaaaccccccccccccccccccaaaaaaccccaaaaccccaaaaaccccccccccaaaaaaaaaaaaaaacccccccccccccccccccccccccccccaaaacccccccccccccccccccccccccccccaaaccccccccccccccaaaa
+abcaaaaaaaccccccccccccccccccaaaaccccccaccaccccaaaaaacccccccccaaaaaaaaaaaaaaacccccccccccccccccccccacccccccccaacccccccccccccccccccccccccccccaaaccccccccccccccaaaa
+abccaacccaccccccccccccccccccccaaacccccccccccccaaaaaaccccccccccaaaaaaaaacaaacccccccccccccccccccaaaacccccccccccccccccccccccccaacccccccaaccccaaacccccccccccccaaaaa
+abcaaaaaacccccccccccccccccccccccccccccccccccccaaaaaccccccccccaaaaaaaaaaccccaacaaccccccccccccccaaaaaacccccccccccccccccccccccaacccccccaaaacaaaaccccccccccccccaccc
+abccaaaaacccccccccccccccccccccccccccccccccccaaccaaacccccccccaaaaaaaaaaaacccaaaaccccccccccccccccaaaaacccccccccccccccaacaaaaaaacccccccaaaaaaaaacccccccccccccccccc
+abccaaaaaacccccccccccccccccccccccccccccaaacaaaccccccccccccccaaaaaaaaaaacccaaaaacccccccccccccccaaaaacccccccccccccaaaaaccaaaaaaaaccccccaaaaaalllllllcccaacccccccc
+abccaaaaaaccccccaaaaacccccccccaaaccccccaaaaaaaccccccccccccccaaacaaacaaacccaaaaaaccccccccccccccaccaaccccccccccccccaaaaacaaaaaaaaajkkkkkkkkkklllllllccccaaaaacccc
+abccaaaaacccccccaaaaacccccccccaaaaccccccaaaaaaccccccccaacaacccccaaacccccccacaaaaccccccccaaaccccccccccccccccccccccaaaaaccaaaaaaajjkkkkkkkkkkllssllllcccaaaaacccc
+abcccaaaaccccccaaaaaacccccccccaaaaccccccaaaaaaaaccccccaaaaacccccaaccccccccccaacccccccccaaaacccccccccccccccaaccccaaaaaccaaaaaacjjjjkkkkkkkkssssssslllccaaaaccccc
+abcccccccccccccaaaaaacccccccccaaaccccccaaaaaaaaacaaccccaaaaacccccccccccccccaaccccccccccaaaaccccccccccccccaaacccccccaaccaaaaaajjjjrrrrrrsssssssssslllcccaaaccccc
+abcccccccccccccaaaaaacccccccccccccccccaaaaaaaaaaaaaaacaaaaaacccccccccccaaacaacccccccccccaaaccccaaacccccaaaaaaaaccccccccaacaaajjjrrrrrrrsssssuusssslmcccaaaacccc
+abcccccccccccccccaacccccccccccccccaacaaaacaaaccaaaaaacaaaaccccccccccccccaaaaaccccccccccccccccccaaaaacccaaaaaaaaccccccccccccaajjjrrrruuurssuuuuvsqqmmcddaaaacccc
+abccccccccccccccccccccccccccccccccaaaaacccaaacccaaaaccccaaccccccccccccccaaaaaaacccccccccccccccaaaaaaccccaaaaaacccccccccccccccjjrrruuuuuuuuuuuuvvqqmmmdddccccccc
+abcccccccccccccccccccccccacccccccccaaaaaccaaacccaaaaccccccccccccccccccccaaaaaaacccccccccccccccaaaaaaccccaaaaaacccccccccaaccccjjjrrtuuuuuuuuyyvvvqqmmmddddcccccc
+abccccccccccccccccccccaaaaccccccccaaaaaacccccaacaccacccccccccccccccccccaaaaaaccccccccccccccccccaaaaaccccaaaaaaccccccccaaaccccjjjrrttuxxxuuxyyyvvqqmmmmdddcccccc
+abcccccccccaacccccccccaaaaaaccccccaaaaccccccaaaccccccccccccccccccccccccaacaaaccccccccccccccccccaacaaccccaaccaaccccaaaaaaaccccjjjrrtttxxxxxyyyyvvqqqmmmddddccccc
+abccccccccaaaacccccccccaaaacccccccccaaccccccaaacaaaccccccccccccccccccaaccccaacccccccccccccccccccccccccccccccccccccaaaaaaaaaacijjqrtttxxxxxyyyvvvqqqqmmmdddccccc
+abcccccacaaaaaccccccccaaaaaccccccccccccccaaaaaaaaaacccccccccccccccccaaaccccccccccccccccccccccccccccccccccccccccccccaaaaaaaaaciiiqqqttxxxxxyyyvvvvqqqqmmmdddcccc
+SbcccccaaaaaaaaaacccccaacaaccccccccccccccaaaaaaaaaccccccccccccccaaacaaacccccccccccccccccccccccccccccccccccccccccccccaaaaaaaciiiqqqtttxxxEzzyyyyvvvqqqmmmdddcccc
+abcccccaaaaaaaaaaccccccccccccaaccccccccccccaaaaaccccccccccccccccaaaaaaaaaacccccccaacccccccccccccaacccccccccccccccccaaaaaaccciiiqqqttxxxxyyyyyyyyvvvqqqmmmeddccc
+abcccccccaaaaaacccccccccccaaaaccccccccccaaaaaaaaacccccccaaaacccccaaaaaaaaacccccaaaaccccccccccaacaaaccccccccccccccccaaaaaaaciiiqqqtttxxyyyyyyyyyvvvvqqqnnneeeccc
+abcccccccaaaaaacccccccccccaaaaaaccccccccaaaaaaaaaaccccccaaaaccccccaaaaaaaccccccaaaaaaccccccccaaaaacccccccccccccccccaaccaaaciiiqqtttxxxxwwyyywwvvvvrrrnnnneeeccc
+abcccccccaaaaaaccccccccccccaaaaacccccccaaaaaaacaaaccccccaaaacccccaaaaaacccccccccaaaaccccccccccaaaaaaccccaaccccccccccccccaaciiqqqtttxxxwwwyywwwwvvrrrrnnneeecccc
+abccccccaaaaaaaaccccccccccaaaaaccccccccaaaaaaccccccccccccaaacccccaaaaaaacccccccaaaaaccccccccaaaaaaaaacccaaccccccccccccccccciiqqqtttttwwswwyywwrrrrrrnnnneeecccc
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2022/data/day13.expected

@@ -0,0 +1,2 @@
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2022/data/day13.input

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+[[[[7,2]],[6,1,[2],[10],2],6],[[4,10],[[],1]]]
+
+[[[],[0,9,1,[4,1,10]],[7,3,[1,1],8,9]],[0],[0,[[8,10,1,8,9],5,[]],[10],[3]],[[[5,8],10,[0,7]]],[8,[],[[6,8]]]]
+[[[[6],[4],[8,0],[3]],10],[[1],[3,0,[8,4,1,7,10],[3,10],7],2,7,6]]
+
+[[[1,9],[[1,3],0,5,8]]]
+[[2,[9,[0,8,4,6,0],[6,7,5,4],10]],[[2,[4,3,5,1],[7,6,8],8,[9,3,2]]],[[[7],[7,1,3],10],[],[5,[10,5],5,0,[]],[],[8,5]],[[7,[8,5,6,9,1],1],[[],[8,1],10],[[1]],2,3]]
+
+[[[10,[4,8]],[[]],7,3,6],[9,[1,5],[0,[10],[6,0,9]]]]
+[[10,3,7],[4,5,[[8,10,2,10,9],10,[0],7],3],[[],0]]

2022/data/day14.expected

@@ -0,0 +1,2 @@
+610
+27194

2022/data/day14.input

@@ -0,0 +1,123 @@
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+511,86 -> 515,86
+485,22 -> 489,22
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+509,150 -> 513,150
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+494,24 -> 498,24
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+497,154 -> 501,154
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+523,80 -> 527,80
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+505,17 -> 510,17
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+498,17 -> 503,17
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+509,31 -> 509,32 -> 513,32 -> 513,31
+504,90 -> 504,91 -> 513,91 -> 513,90
+493,48 -> 493,49 -> 512,49 -> 512,48
+479,26 -> 483,26
+488,24 -> 492,24
+512,152 -> 516,152
+491,26 -> 495,26
+493,48 -> 493,49 -> 512,49 -> 512,48
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+517,80 -> 521,80
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+514,83 -> 518,83
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+529,86 -> 533,86
+526,83 -> 530,83
+497,13 -> 502,13
+516,108 -> 516,109 -> 520,109 -> 520,108
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+503,154 -> 507,154
+494,15 -> 499,15
+520,77 -> 524,77
+506,152 -> 510,152
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+493,48 -> 493,49 -> 512,49 -> 512,48
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+516,108 -> 516,109 -> 520,109 -> 520,108
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+488,20 -> 492,20
+500,152 -> 504,152
+509,31 -> 509,32 -> 513,32 -> 513,31
+509,154 -> 513,154
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+523,86 -> 527,86
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+491,22 -> 495,22
+497,26 -> 501,26
+506,148 -> 510,148
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+494,157 -> 494,159 -> 491,159 -> 491,167 -> 503,167 -> 503,159 -> 499,159 -> 499,157
+516,108 -> 516,109 -> 520,109 -> 520,108
+501,15 -> 506,15
+516,125 -> 516,129 -> 515,129 -> 515,136 -> 526,136 -> 526,129 -> 519,129 -> 519,125
+491,17 -> 496,17
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+512,139 -> 512,142 -> 509,142 -> 509,145 -> 521,145 -> 521,142 -> 517,142 -> 517,139
+504,90 -> 504,91 -> 513,91 -> 513,90
+503,45 -> 503,41 -> 503,45 -> 505,45 -> 505,43 -> 505,45 -> 507,45 -> 507,37 -> 507,45 -> 509,45 -> 509,35 -> 509,45 -> 511,45 -> 511,37 -> 511,45
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62
+482,24 -> 486,24
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+509,31 -> 509,32 -> 513,32 -> 513,31
+516,65 -> 516,69 -> 508,69 -> 508,74 -> 521,74 -> 521,69 -> 520,69 -> 520,65
+512,122 -> 512,118 -> 512,122 -> 514,122 -> 514,120 -> 514,122 -> 516,122 -> 516,121 -> 516,122
+515,154 -> 519,154
+517,86 -> 521,86
+485,26 -> 489,26
+504,90 -> 504,91 -> 513,91 -> 513,90
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+510,104 -> 510,96 -> 510,104 -> 512,104 -> 512,101 -> 512,104 -> 514,104 -> 514,100 -> 514,104 -> 516,104 -> 516,103 -> 516,104
+503,150 -> 507,150
+520,83 -> 524,83
+508,62 -> 508,56 -> 508,62 -> 510,62 -> 510,52 -> 510,62 -> 512,62 -> 512,60 -> 512,62 -> 514,62 -> 514,58 -> 514,62 -> 516,62 -> 516,55 -> 516,62

2022/data/day15.expected

@@ -0,0 +1 @@
+5335787

2022/data/day15.input

@@ -0,0 +1,25 @@
+Sensor at x=1259754, y=1927417: closest beacon is at x=1174860, y=2000000
+Sensor at x=698360, y=2921616: closest beacon is at x=1174860, y=2000000
+Sensor at x=2800141, y=2204995: closest beacon is at x=3151616, y=2593677
+Sensor at x=3257632, y=2621890: closest beacon is at x=3336432, y=2638865
+Sensor at x=3162013, y=3094407: closest beacon is at x=3151616, y=2593677
+Sensor at x=748228, y=577603: closest beacon is at x=849414, y=-938539
+Sensor at x=3624150, y=2952930: closest beacon is at x=3336432, y=2638865
+Sensor at x=2961687, y=2430611: closest beacon is at x=3151616, y=2593677
+Sensor at x=142293, y=3387807: closest beacon is at x=45169, y=4226343
+Sensor at x=3309479, y=1598941: closest beacon is at x=3336432, y=2638865
+Sensor at x=1978235, y=3427616: closest beacon is at x=2381454, y=3683743
+Sensor at x=23389, y=1732536: closest beacon is at x=1174860, y=2000000
+Sensor at x=1223696, y=3954547: closest beacon is at x=2381454, y=3683743
+Sensor at x=3827517, y=3561118: closest beacon is at x=4094575, y=3915146
+Sensor at x=3027894, y=3644321: closest beacon is at x=2381454, y=3683743
+Sensor at x=3523333, y=3939956: closest beacon is at x=4094575, y=3915146
+Sensor at x=2661743, y=3988507: closest beacon is at x=2381454, y=3683743
+Sensor at x=2352285, y=2877820: closest beacon is at x=2381454, y=3683743
+Sensor at x=3214853, y=2572272: closest beacon is at x=3151616, y=2593677
+Sensor at x=3956852, y=2504216: closest beacon is at x=3336432, y=2638865
+Sensor at x=219724, y=3957089: closest beacon is at x=45169, y=4226343
+Sensor at x=1258233, y=2697879: closest beacon is at x=1174860, y=2000000
+Sensor at x=3091374, y=215069: closest beacon is at x=4240570, y=610698
+Sensor at x=3861053, y=889064: closest beacon is at x=4240570, y=610698
+Sensor at x=2085035, y=1733247: closest beacon is at x=1174860, y=2000000

2022/data/day16.input

@@ -0,0 +1,54 @@
+Valve EJ has flow rate=25; tunnel leads to valve MC
+Valve WC has flow rate=0; tunnels lead to valves OW, RU
+Valve NP has flow rate=0; tunnels lead to valves VR, KL
+Valve AA has flow rate=0; tunnels lead to valves QT, AP, EZ, AK, XV
+Valve VO has flow rate=6; tunnels lead to valves KM, RF, HS, LJ, IA
+Valve CB has flow rate=0; tunnels lead to valves UI, UP
+Valve TE has flow rate=18; tunnel leads to valve JT
+Valve CZ has flow rate=0; tunnels lead to valves UP, OW
+Valve LJ has flow rate=0; tunnels lead to valves DV, VO
+Valve UP has flow rate=7; tunnels lead to valves SK, CB, CZ
+Valve FP has flow rate=0; tunnels lead to valves OW, RE
+Valve KM has flow rate=0; tunnels lead to valves SE, VO
+Valve DV has flow rate=0; tunnels lead to valves LJ, UM
+Valve FL has flow rate=0; tunnels lead to valves AH, TS
+Valve VR has flow rate=24; tunnels lead to valves DM, TF, NP
+Valve IA has flow rate=0; tunnels lead to valves VS, VO
+Valve RF has flow rate=0; tunnels lead to valves VO, JF
+Valve RT has flow rate=0; tunnels lead to valves UM, SE
+Valve RU has flow rate=0; tunnels lead to valves AR, WC
+Valve SE has flow rate=4; tunnels lead to valves GU, KM, CX, RT
+Valve MC has flow rate=0; tunnels lead to valves EJ, AR
+Valve TF has flow rate=0; tunnels lead to valves AH, VR
+Valve CX has flow rate=0; tunnels lead to valves SE, TO
+Valve GL has flow rate=11; tunnels lead to valves UY, KL, CY
+Valve GU has flow rate=0; tunnels lead to valves SE, EZ
+Valve VS has flow rate=0; tunnels lead to valves XN, IA
+Valve EZ has flow rate=0; tunnels lead to valves AA, GU
+Valve GK has flow rate=0; tunnels lead to valves FI, HZ
+Valve JT has flow rate=0; tunnels lead to valves TE, XN
+Valve DM has flow rate=0; tunnels lead to valves VR, HZ
+Valve AR has flow rate=16; tunnels lead to valves UI, RU, MC
+Valve XN has flow rate=9; tunnels lead to valves XP, JT, VS, GT, CY
+Valve CY has flow rate=0; tunnels lead to valves XN, GL
+Valve QT has flow rate=0; tunnels lead to valves UM, AA
+Valve KL has flow rate=0; tunnels lead to valves GL, NP
+Valve SK has flow rate=0; tunnels lead to valves XV, UP
+Valve OW has flow rate=12; tunnels lead to valves CZ, WC, FP
+Valve AK has flow rate=0; tunnels lead to valves AA, HS
+Valve XV has flow rate=0; tunnels lead to valves AA, SK
+Valve GT has flow rate=0; tunnels lead to valves XN, UM
+Valve FI has flow rate=0; tunnels lead to valves JF, GK
+Valve UY has flow rate=0; tunnels lead to valves JF, GL
+Valve UM has flow rate=5; tunnels lead to valves DV, GT, RT, QT
+Valve IQ has flow rate=0; tunnels lead to valves HZ, AH
+Valve JF has flow rate=10; tunnels lead to valves RF, FI, UY, RE, TS
+Valve TS has flow rate=0; tunnels lead to valves JF, FL
+Valve AH has flow rate=23; tunnels lead to valves IQ, FL, TF
+Valve HS has flow rate=0; tunnels lead to valves AK, VO
+Valve HZ has flow rate=20; tunnels lead to valves IQ, DM, GK
+Valve TO has flow rate=15; tunnel leads to valve CX
+Valve XP has flow rate=0; tunnels lead to valves AP, XN
+Valve AP has flow rate=0; tunnels lead to valves XP, AA
+Valve RE has flow rate=0; tunnels lead to valves JF, FP
+Valve UI has flow rate=0; tunnels lead to valves AR, CB

2022/data/day18.expected

@@ -0,0 +1,2 @@
+4364
+2508

2022/data/day2.expected

@@ -0,0 +1,2 @@
+12458
+12683