2020 day14/haskell: add solution
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5 changed files with 661 additions and 0 deletions
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@ -18,5 +18,6 @@ https://adventofcode.com/2020/
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|10 | | `**` | |
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|11 | `**` | | |
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|13 | | `**` | |
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|14 | | `**` | |
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`test.sh` can be used to run all solutions and automatically compares them to (my) puzzle inputs and the expected outputs.
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2
2020/data/day14.expected
Normal file
2
2020/data/day14.expected
Normal file
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@ -0,0 +1,2 @@
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12512013221615
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3905642473893
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572
2020/data/day14.input
Normal file
572
2020/data/day14.input
Normal file
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@ -0,0 +1,572 @@
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mask = 101XX10X1X00001010011011X1XXX1001011
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mem[12898] = 4515455
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mem[39269] = 262864
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mem[15998] = 27
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mem[4565] = 896581
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mem[35263] = 872262
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mask = 110X1111000X000111001XX0110X010111XX
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mem[5436] = 29453
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mem[405] = 4591187
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mem[36544] = 119659504
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mem[4590] = 1754617
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mask = 11001111000100XX11000000000XX0X0X001
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mem[18971] = 65392
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mem[12898] = 60445914
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mem[51566] = 8117
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mem[7267] = 99056
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mem[25605] = 978
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||||
mem[33329] = 437436
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mask = 10X0X100X00000101X0X0001111111X101XX
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mem[43594] = 7609
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||||
mem[12898] = 126982257
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||||
mem[15065] = 4039
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mask = 11XX11XX000100X10110111001101000X110
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||||
mem[2358] = 139154
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mem[48424] = 361
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mask = X00X0X000101010111111000X11001000111
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mem[60868] = 1012242539
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||||
mem[13504] = 114153
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mem[51015] = 34551413
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||||
mem[43984] = 708156
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||||
mem[58774] = 436301
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||||
mem[15489] = 243282402
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mem[10963] = 81839
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mask = 1001000X1100001001001101XX01000001X0
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||||
mem[63618] = 3428738
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||||
mem[16270] = 289636637
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||||
mem[45847] = 271443
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mem[38518] = 2789
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mask = X0010X000101X00111110010101010X001X1
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||||
mem[56985] = 14253068
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||||
mem[10578] = 869930
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mask = 10000100010100010X11X01X00X011010001
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||||
mem[31893] = 32746
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mem[57677] = 1423
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mem[43667] = 94853349
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mem[7624] = 76941001
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mem[20508] = 1273351
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mask = 10XX00100011X0X0110XX1X10011XX111000
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mem[28963] = 125041
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||||
mem[42777] = 251362
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mem[34873] = 155374451
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mem[29355] = 886081
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mem[16775] = 57795906
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mem[42311] = 10111
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mem[30652] = 4443965
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mask = 10000111XX000001X1X0X001011110X00111
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mem[31369] = 31024146
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mem[23234] = 1046769566
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mask = 00XX1010XX1X001011010111X11X1010011X
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||||
mem[20251] = 3138
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||||
mem[23672] = 28276
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mem[48425] = 304
|
||||
mem[51384] = 6985
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mask = 110X011X00000001X100111001X010010X0X
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mem[44366] = 985
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||||
mem[47430] = 127814906
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||||
mem[34576] = 41033794
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mem[58183] = 11571792
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mask = XX0001X0010100011X11101010000101X011
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||||
mem[47311] = 897443
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mem[47179] = 457654457
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mask = X100X11100010X0XX10X1000X11001001100
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mem[57561] = 38620862
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mem[63945] = 78
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mem[37164] = 2722
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mask = 0000XXXX0011XX0XX1110010X10000111000
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mem[52440] = 14680631
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mem[10040] = 482410861
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mem[31369] = 1312217
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mask = 10X1X0001000X01111X01011100111111001
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mem[33657] = 127832235
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mem[59700] = 232182856
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mem[64183] = 32458630
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mem[13528] = 56706903
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mask = 00XX110X0X0XX00111010101X001110111X0
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mem[34491] = 23031313
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mem[16152] = 2473
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mem[46572] = 58257
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mask = 11X1011X00000001010XXX1010X10000X000
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mem[36932] = 54890
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mem[17249] = 518900642
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mem[58586] = 27068931
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mask = 1100011X0000X00111001000X00011X11001
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mem[4203] = 11690902
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mem[20122] = 399199895
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mem[32417] = 379534
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mem[50520] = 3253466
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mem[23645] = 12184122
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mask = 100000X00001010011X01011100X0010X010
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mem[59410] = 3462
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mem[51849] = 231731736
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mem[31141] = 17505
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mem[2661] = 20669501
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mem[57030] = 225241
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mem[37965] = 4947
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mem[37475] = 120
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mask = 10XX01110001000XX10001X0101111000011
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mem[54239] = 21386681
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mem[25423] = 49927683
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mem[17991] = 24735
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mem[26742] = 66457157
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mask = 10000100100X00100X011X11100X10100100
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mem[42442] = 2898
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mem[33841] = 98213928
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mem[1295] = 436390
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mem[20533] = 26130
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mask = 00X0001X000X000011001X1010000X101101
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mem[12898] = 85396
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mem[17781] = 96765096
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mem[23645] = 156257533
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mem[41542] = 25550
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mem[23694] = 19768
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mask = 00000000X0111101X11101110110X01X0001
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mem[30165] = 9659654
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mem[17417] = 840
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mem[38700] = 20540407
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mem[17514] = 266223622
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mask = 1X0X0X100001000011001000101X11X0XX11
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mem[1187] = 2633
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mem[49568] = 13636
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mem[41073] = 2493
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mem[42442] = 562308
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mask = 10000XXX0001000X1100010X111111000001
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mem[18887] = 22856
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mem[7241] = 580581
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mem[20501] = 15343308
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mem[8329] = 9182
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mem[30265] = 1720165
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mem[55589] = 56956
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mem[56070] = 99398329
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mask = 11X0111100010001X1X0101X0011X01XX1XX
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mem[22677] = 289814
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mem[57909] = 24289535
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mem[2053] = 96654349
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mem[12868] = 30681
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||||
mem[28491] = 26428
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mem[52407] = 644
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mem[26000] = 1537
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mask = 100001X11100X00X0110010X111X100X0110
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mem[61720] = 4504409
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mem[18231] = 20747971
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mem[7557] = 40802
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mem[8177] = 1825
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mem[16963] = 831395
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mem[58488] = 32600
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mask = 10000X001000001XX1XX101111X11X100XX1
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mem[23493] = 1676
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mem[14482] = 39198509
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mem[12119] = 277
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mem[34873] = 839193094
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mem[59700] = 213967901
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mem[44792] = 4486
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mask = 11101111XX0X00010X100X101XX100000X00
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||||
mem[21304] = 749
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||||
mem[17415] = 1039713731
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mem[56228] = 1653
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mask = 0000X0X000X1X000X1XXX01000100010100X
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mem[54745] = 258440
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mem[9496] = 1382
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mem[677] = 160442786
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mem[18231] = 118264
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mem[3314] = 7774920
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mem[48978] = 58150
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mask = 11010X11000000X1110011100X001001X0X0
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mem[11295] = 1701
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mem[43085] = 35120466
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mem[36184] = 717214
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mem[11085] = 797499853
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mem[50040] = 100884
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||||
mem[12868] = 76327
|
||||
mem[1094] = 17127824
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mask = X1X0111100000001X100100111101111X000
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||||
mem[23009] = 56150703
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||||
mem[62945] = 187456
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||||
mem[16270] = 2148
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||||
mem[6558] = 226
|
||||
mem[18104] = 116620
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||||
mask = 1100111X000100010X0X1XX0111101X00X1X
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||||
mem[20277] = 41195
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||||
mem[55507] = 497048
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||||
mem[65060] = 1392113
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||||
mem[39631] = 729
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||||
mem[20012] = 221
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mem[38700] = 157
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mask = 1011110X1100001010XX01X111X111X01110
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mem[50095] = 329773464
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||||
mem[19363] = 23694
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||||
mem[23187] = 136735746
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||||
mem[41305] = 248581
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||||
mem[60810] = 36613
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mask = 11X1010000000001X00001X0010010111X10
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||||
mem[23234] = 315410359
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||||
mem[61681] = 3806597
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||||
mem[57545] = 205794
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||||
mem[8173] = 743124
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||||
mem[33142] = 2265923
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mem[50325] = 338694
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mask = 11101XX10001X001X100101X0X11101000X0
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mem[10886] = 92
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||||
mem[31621] = 49382572
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||||
mem[40094] = 381691821
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||||
mem[22404] = 25092613
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||||
mem[26046] = 540575313
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mask = 1100X110000X000100X01X0X0X00X0X00001
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mem[6401] = 12044
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mem[51779] = 1254732
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||||
mem[49213] = 14771072
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||||
mask = 11001X1100X10X0111001110X10X0XX00100
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||||
mem[17960] = 1810
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||||
mem[58879] = 14547554
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mask = 10110010X01110X01101000101100X011X01
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||||
mem[6271] = 43039
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||||
mem[42035] = 308023
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||||
mem[61809] = 14965999
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||||
mem[14482] = 22965
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||||
mask = 1000011111000X0X0110X111X1001XX00110
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||||
mem[34865] = 521885574
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||||
mem[32874] = 47758845
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||||
mem[49758] = 486116428
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||||
mem[4620] = 436
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||||
mem[8795] = 37336
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||||
mem[35355] = 1913
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||||
mem[24155] = 5028
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mask = 100X00X100XXX0X011X111000001X00X1001
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||||
mem[12898] = 326718882
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||||
mem[41304] = 2217
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||||
mem[512] = 252187
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||||
mask = 00001X10X0111X0X01100010001010110011
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||||
mem[17133] = 9763003
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||||
mem[53861] = 20374202
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||||
mem[12411] = 11146
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||||
mem[44155] = 70710
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||||
mem[18558] = 1014374
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||||
mem[8244] = 27394
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||||
mask = 1100111100010X0X110X10X1X1110X100100
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||||
mem[6255] = 15673046
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||||
mem[27448] = 617665
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mem[17549] = 1391
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||||
mem[9254] = 1191392
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mask = 1110111X00010001X11XX110X01110100001
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||||
mem[27269] = 915739
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mem[17886] = 2414578
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mem[23234] = 10312308
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mask = 1000111100010X01110X0101XX1010100001
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||||
mem[14210] = 3945538
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||||
mem[53570] = 152079
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||||
mem[42311] = 804
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mem[20501] = 7528
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||||
mem[62486] = 44029
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mask = 1X1X110X1X0X0010100001X111X11X10110X
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mem[31020] = 10294
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||||
mem[36367] = 173644419
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||||
mem[3344] = 55087
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mem[22404] = 3768102
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mask = 0X000010000X00X01100XX1000110X001101
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||||
mem[8146] = 32084685
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||||
mem[25356] = 204754
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||||
mem[53100] = 31087
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||||
mem[16162] = 43271515
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mem[7495] = 248175354
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mask = 0X00111X000100000111000011000X11000X
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mem[48425] = 16845
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mem[21120] = 5932031
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mem[18984] = 5971079
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mem[22024] = 1139029
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||||
mem[57772] = 8264
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mask = 1000X1X111X00000011001001X01X1000X11
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||||
mem[29416] = 214197264
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mem[23107] = 16163
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mem[35947] = 392
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||||
mem[3969] = 18827505
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mask = 1X001111000XX10X1101110001X111100000
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||||
mem[23664] = 824737
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||||
mem[35051] = 6316
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||||
mem[23107] = 3396
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||||
mem[23133] = 93865
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mask = 101000100011X000110101010110XX01010X
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||||
mem[64539] = 503222475
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mem[49280] = 222415
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mem[4908] = 6056
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mask = X11011110001000111X000110X100X111101
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mem[63002] = 227835267
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mem[62736] = 2687
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||||
mem[35355] = 13135677
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||||
mem[30575] = 34622509
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||||
mem[6958] = 8289
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mask = 1100111100X1X00111101011001110XXX011
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mem[38931] = 50025
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mem[5213] = 488636
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mem[16162] = 6370
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||||
mem[49918] = 27948504
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||||
mem[10972] = 32144736
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||||
mem[25810] = 23808695
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||||
mem[59308] = 573239
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||||
mask = 1000001000X10X001100X011X01X11100X01
|
||||
mem[8119] = 1356
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||||
mem[18765] = 16001283
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||||
mem[40681] = 81290249
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||||
mem[12898] = 1301
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||||
mem[26361] = 20784743
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||||
mem[27679] = 142542224
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||||
mask = 101X001X001X00001X0X0110001X111X01X1
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||||
mem[35355] = 805383617
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||||
mem[61993] = 4078154
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||||
mem[17549] = 1577966
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||||
mem[5900] = 111957340
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||||
mask = 0000001000010XX01X000000000100X10001
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||||
mem[14482] = 203210
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||||
mem[40789] = 103701945
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||||
mem[60901] = 165096
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||||
mem[9784] = 16634
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||||
mem[58840] = 2959
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||||
mask = 0X0000100001010XX1X0101X001X01X010XX
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||||
mem[35677] = 923584
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||||
mem[38170] = 52214160
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||||
mem[59710] = 917580
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||||
mem[28352] = 9711
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||||
mem[24738] = 527299
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||||
mask = 111XX100100100X0XXX0010111011010100X
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||||
mem[48324] = 113818619
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||||
mem[46099] = 22968630
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||||
mem[2047] = 7513744
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||||
mem[16084] = 22059
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||||
mem[3484] = 7934120
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||||
mask = 100001X00X01000111XX110010X1X0011X01
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||||
mem[40970] = 582049676
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||||
mem[43326] = 33149
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||||
mem[28352] = 8866951
|
||||
mem[8571] = 5223
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||||
mask = X10100100XX1000011001X00100011000010
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||||
mem[57677] = 10736612
|
||||
mem[44008] = 27644
|
||||
mem[51849] = 54378
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||||
mem[20005] = 5582059
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||||
mem[23107] = 9832268
|
||||
mem[57561] = 40400
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||||
mask = 11101111000X0001X10X10X10X1X10X010X0
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||||
mem[29968] = 89927661
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||||
mem[56] = 1989163
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||||
mem[7557] = 17453
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||||
mem[33361] = 9
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||||
mem[43444] = 78638
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||||
mem[12248] = 54497991
|
||||
mem[35709] = 2765740
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||||
mask = 110XX1X00000000X0X00110000X0000001X0
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||||
mem[34491] = 13649
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||||
mem[26000] = 980
|
||||
mask = 0X0000100X010100X1X0X000010001100101
|
||||
mem[7504] = 2704
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||||
mem[41073] = 22655
|
||||
mem[28507] = 9278213
|
||||
mem[21463] = 1475
|
||||
mem[63802] = 11330
|
||||
mask = 11001111000X0001X100X1001001101000X0
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||||
mem[45847] = 1029083
|
||||
mem[52359] = 87173
|
||||
mem[7504] = 205315899
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||||
mem[37731] = 657
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||||
mem[41396] = 1027
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||||
mask = X001X0100XX10X1011X10X010000001111X1
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||||
mem[29618] = 14034335
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||||
mem[7831] = 1455
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||||
mem[28409] = 26087196
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||||
mask = X000001000010X0011001X1XX010XXX011X1
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||||
mem[49280] = 816038
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||||
mem[53410] = 632054
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||||
mem[25605] = 2170
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||||
mem[47742] = 449847
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||||
mem[7056] = 13776253
|
||||
mem[12256] = 722
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||||
mask = 110X11X100010001X10010X0X01010100100
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||||
mem[63043] = 7807913
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||||
mem[57885] = 230082055
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||||
mem[50315] = 27089695
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||||
mem[64722] = 54151
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||||
mem[19735] = 978866
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||||
mem[41391] = 9015641
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||||
mem[50548] = 96572794
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||||
mask = 100X00X0XX0000X1110X10111011111000X1
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||||
mem[61760] = 5688555
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||||
mem[18595] = 4630
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||||
mem[41305] = 1670
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||||
mem[25605] = 472094
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||||
mem[50759] = 28261157
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||||
mask = 00XXX1X0010100011XX1011010X0010100XX
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||||
mem[16270] = 7874
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||||
mem[63561] = 49551173
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||||
mem[43150] = 11196
|
||||
mem[18504] = 18360154
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||||
mask = 1X0101X1000000X111001X100X0011010101
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||||
mem[1825] = 2048695
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||||
mem[26563] = 66443
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||||
mem[22477] = 2539322
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||||
mem[59104] = 1269245
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||||
mem[50554] = 3370
|
||||
mem[7797] = 300
|
||||
mask = 1000000XX0000X11010X11111X011010X011
|
||||
mem[61720] = 700175
|
||||
mem[37943] = 41662
|
||||
mem[3405] = 441992426
|
||||
mask = X0XX0X001X00001001000111110110XX0110
|
||||
mem[45473] = 1830
|
||||
mem[35940] = 16393
|
||||
mem[44793] = 10545068
|
||||
mem[23107] = 145304756
|
||||
mem[48096] = 480559528
|
||||
mem[57539] = 97582237
|
||||
mem[64518] = 60543
|
||||
mask = 10X00100010100X1X01XX0X000010101011X
|
||||
mem[14210] = 200447
|
||||
mem[26703] = 46292
|
||||
mem[42748] = 7946
|
||||
mem[11664] = 7633363
|
||||
mask = X00X010001010X01XX11X0101X0X01000X01
|
||||
mem[40269] = 357709
|
||||
mem[36823] = 14385170
|
||||
mem[52568] = 522064310
|
||||
mem[41363] = 389730
|
||||
mem[4127] = 2285054
|
||||
mask = 1010110010000010X000XX111011100X01XX
|
||||
mem[19072] = 49597375
|
||||
mem[32473] = 7622
|
||||
mem[1916] = 9685106
|
||||
mem[10040] = 16339629
|
||||
mem[10795] = 25165351
|
||||
mem[16634] = 508779
|
||||
mem[16084] = 232615
|
||||
mask = 11XX1111X001XX0111000010X0110100X111
|
||||
mem[44372] = 11010
|
||||
mem[58030] = 5106
|
||||
mem[15235] = 24371
|
||||
mem[41578] = 3641535
|
||||
mask = 110000X000000X01X0X0X01X1X0100001011
|
||||
mem[64968] = 1528
|
||||
mem[21183] = 429276
|
||||
mem[51816] = 60726
|
||||
mem[12248] = 87748
|
||||
mask = X0001111000000011100101X10111100X11X
|
||||
mem[39612] = 57230
|
||||
mem[33329] = 35880
|
||||
mem[15681] = 27569
|
||||
mem[51326] = 237622439
|
||||
mem[36099] = 48369
|
||||
mem[58183] = 726
|
||||
mem[38471] = 2690
|
||||
mask = 11X011110X01000X0100X0X0X000X01X01X0
|
||||
mem[41793] = 519002787
|
||||
mem[39290] = 5821
|
||||
mask = 000X00100001XX00X1000000X1XX10010110
|
||||
mem[36367] = 1347261
|
||||
mem[52040] = 858329
|
||||
mem[60969] = 14183
|
||||
mem[49232] = 3014091
|
||||
mask = X000X01X000101XX1100X11001X00000100X
|
||||
mem[61397] = 9063
|
||||
mem[63395] = 92917
|
||||
mem[47750] = 6587
|
||||
mem[13695] = 2038
|
||||
mem[52876] = 219355
|
||||
mem[50726] = 815351
|
||||
mask = 11X0X111000100011100100X0X11X1X011XX
|
||||
mem[24438] = 360143
|
||||
mem[14268] = 233280
|
||||
mem[46071] = 14590
|
||||
mem[47430] = 195019
|
||||
mem[8714] = 5003481
|
||||
mem[34758] = 866985
|
||||
mask = 10000X00XX010101101X1X111001X0001110
|
||||
mem[12826] = 369283
|
||||
mem[33546] = 519165
|
||||
mem[34578] = 12340
|
||||
mem[13504] = 301264250
|
||||
mem[4433] = 26315015
|
||||
mask = X0X011X000X100X001110100000XX011100X
|
||||
mem[10779] = 6427
|
||||
mem[62591] = 124867728
|
||||
mem[4073] = 26086825
|
||||
mem[19735] = 14280934
|
||||
mem[40681] = 54398576
|
||||
mem[44232] = 1164302
|
||||
mem[5734] = 677248729
|
||||
mask = 1000XX0X11000010X100X01011011X1001X1
|
||||
mem[55680] = 6971988
|
||||
mem[4565] = 1361280
|
||||
mem[35316] = 2209
|
||||
mem[40546] = 758
|
||||
mem[47381] = 49216
|
||||
mask = 000000100XX10101X10X10000XX1X01X0100
|
||||
mem[57507] = 477326
|
||||
mem[58729] = 256151738
|
||||
mem[47689] = 16875625
|
||||
mask = 0000001000010X00X100100X0X0X0X00010X
|
||||
mem[58893] = 531598
|
||||
mem[56609] = 1534
|
||||
mem[793] = 3558686
|
||||
mem[17811] = 31042
|
||||
mem[41552] = 73028105
|
||||
mem[12657] = 1035597401
|
||||
mask = 110011100000000101001XX00101X0000X00
|
||||
mem[18971] = 81961737
|
||||
mem[58641] = 685839
|
||||
mem[58774] = 51830284
|
||||
mem[50554] = 190835154
|
||||
mask = 1010X100000000101X00100X1110X0001X01
|
||||
mem[10630] = 11281616
|
||||
mem[30301] = 344
|
||||
mem[21809] = 66389352
|
||||
mem[15829] = 3924744
|
||||
mem[50602] = 546681
|
||||
mem[33142] = 153438
|
||||
mask = 0X000010000X010X111X01X11110111X10X0
|
||||
mem[32309] = 1315
|
||||
mem[59481] = 404
|
||||
mem[13793] = 2029
|
||||
mem[41406] = 2393
|
||||
mem[7495] = 24826836
|
||||
mem[61576] = 9555003
|
||||
mask = 00000100X10X010111111X0010X111010010
|
||||
mem[6662] = 15689063
|
||||
mem[1130] = 182923358
|
||||
mem[6648] = 3538
|
||||
mem[8833] = 7984
|
||||
mem[7495] = 8285851
|
||||
mask = 11000X1X00XX000100X01X0X01X11X000000
|
||||
mem[34270] = 180307825
|
||||
mem[36097] = 712
|
||||
mem[47750] = 843753
|
||||
mem[44800] = 247708
|
||||
mem[48331] = 31912
|
||||
mask = 0001000001010101XX1X1X1X011X1000011X
|
||||
mem[15235] = 491
|
||||
mem[47685] = 775
|
||||
mem[52882] = 99948
|
||||
mem[32016] = 395727
|
||||
mask = 100000010XX0XX00X101X10000X110X01000
|
||||
mem[49801] = 230387797
|
||||
mem[55855] = 7808
|
||||
mem[39291] = 114525
|
||||
mem[50759] = 2588
|
||||
mem[31793] = 19374
|
||||
mask = 10XX11X000010X00X1X1XX010011011110X1
|
||||
mem[45068] = 763282
|
||||
mem[31165] = 43188
|
||||
mem[25684] = 1041033
|
||||
mem[52456] = 32196
|
||||
mask = 1100X1XXX001X00111X0110X0X101010X101
|
||||
mem[59821] = 6610
|
||||
mem[57397] = 67932
|
||||
mem[15240] = 505977952
|
||||
mask = 100X001XX0X1X00011010100X0110000X001
|
||||
mem[22585] = 2024050
|
||||
mem[30527] = 79580709
|
||||
mem[57425] = 7597579
|
||||
mem[49280] = 47528262
|
||||
mask = 1X00XX1X000X0001110011X010X111000001
|
||||
mem[45847] = 207968
|
||||
mem[12898] = 69230005
|
||||
mem[18887] = 433691609
|
||||
mem[7495] = 114085080
|
||||
mem[8177] = 105183315
|
||||
mem[9561] = 1468259
|
||||
mem[38679] = 7998
|
||||
81
2020/day14/day14.hs
Normal file
81
2020/day14/day14.hs
Normal file
|
|
@ -0,0 +1,81 @@
|
|||
{-# LANGUAGE NamedFieldPuns #-}
|
||||
|
||||
module Day14 where
|
||||
|
||||
import AoC
|
||||
|
||||
import Data.Bits
|
||||
import Data.Map (Map)
|
||||
import qualified Data.Map as M
|
||||
import Data.Maybe
|
||||
import Data.Tuple
|
||||
import Data.Word
|
||||
import Text.ParserCombinators.ReadP
|
||||
import Text.Read.Lex
|
||||
|
||||
data Mask = Mask { set :: Word64
|
||||
, clear :: Word64
|
||||
, dontcare :: Word64
|
||||
} deriving (Eq, Show)
|
||||
|
||||
data Store = Store { address :: Word64
|
||||
, value :: Word64
|
||||
} deriving (Show)
|
||||
|
||||
parseMaskDecl :: ReadP Mask
|
||||
parseMaskDecl = do
|
||||
string "mask = "
|
||||
mask <- many1 (choice $ char <$> "01X")
|
||||
let extractMask c = foldl setBit zeroBits . map fst . filter ((==c) . snd) . enumerate 0 . reverse $ mask
|
||||
return $ Mask { set = extractMask '1'
|
||||
, clear = extractMask '0'
|
||||
, dontcare = extractMask 'X'
|
||||
}
|
||||
|
||||
parseStoreInstruction :: ReadP Store
|
||||
parseStoreInstruction = do
|
||||
string "mem"
|
||||
address <- between (char '[') (char ']') readDecP
|
||||
string " = "
|
||||
value <- readDecP
|
||||
return $ Store {address, value}
|
||||
|
||||
parseGroup :: ReadP (Mask, [Store])
|
||||
parseGroup = do
|
||||
mask <- parseMaskDecl
|
||||
char '\n'
|
||||
stores <- parseStoreInstruction `endBy` (char '\n')
|
||||
return (mask, stores)
|
||||
|
||||
runStores :: [Store] -> Word64
|
||||
runStores = sum . M.fromList . map (\(Store a v) -> (a, v))
|
||||
|
||||
applyMask :: Mask -> Word64 -> Word64
|
||||
applyMask Mask{set, clear} n = (n .|. set) .&. complement clear
|
||||
|
||||
maskValues :: Mask -> [Store] -> [Store]
|
||||
maskValues mask = map maskValue
|
||||
where maskValue store@Store{value} = store {value = applyMask mask value}
|
||||
|
||||
maskAddresses :: Mask -> [Store] -> [Store]
|
||||
maskAddresses mask = concatMap maskAddress
|
||||
where maskAddress store@Store{address} = map (\m -> store {address = applyMask m address}) . evalDontcare $ mask { clear = 0 }
|
||||
|
||||
evalDontcare :: Mask -> [Mask]
|
||||
evalDontcare = go 0
|
||||
where go i mask@Mask{set, clear, dontcare}
|
||||
| dontcare == 0 = [mask]
|
||||
| dontcare `testBit` i = go (i+1) withSet ++ go (i+1) withClear
|
||||
| otherwise = go (i+1) mask
|
||||
where new = mask { dontcare = dontcare `clearBit` i }
|
||||
withSet = new { set = set `setBit` i }
|
||||
withClear = new { clear = clear `setBit` i }
|
||||
|
||||
part1 :: [(Mask, [Store])] -> Word64
|
||||
part1 = runStores . concatMap (uncurry maskValues)
|
||||
|
||||
part2 :: [(Mask, [Store])] -> Word64
|
||||
part2 = runStores . concatMap (uncurry maskAddresses)
|
||||
|
||||
main = runAoC readGroups part1 part2
|
||||
where readGroups = fromJust . oneCompleteResult (many parseGroup)
|
||||
|
|
@ -1,5 +1,6 @@
|
|||
module AoC
|
||||
( (.:)
|
||||
, enumerate
|
||||
, oneCompleteResult
|
||||
, splitOnEmptyLines
|
||||
, runAoC
|
||||
|
|
@ -14,6 +15,10 @@ import Text.ParserCombinators.ReadP
|
|||
f .: g = (f .) . g
|
||||
infixl 8 .:
|
||||
|
||||
enumerate :: Enum i => i -> [a] -> [(i, a)]
|
||||
enumerate _ [] = []
|
||||
enumerate i (x:xs) = (i, x) : enumerate (succ i) xs
|
||||
|
||||
oneCompleteResult :: ReadP a -> String -> Maybe a
|
||||
oneCompleteResult p s = case readP_to_S (p <* eof) s of
|
||||
[(x, "")] -> Just x
|
||||
|
|
|
|||
Loading…
Reference in a new issue