Complete day 14
parent
a0e76a9949
commit
2f48b0e912
GPG Key ID:
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@ -0,0 +1,13 @@
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[package]
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name = "day-14"
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version = "0.1.0"
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authors = ["Tristan Daniël Maat <tm@tlater.net>"]
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edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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mem[42192] = 4234239
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mem[29158] = 116136736
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mem[39435] = 357608510
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mem[2752] = 64188
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mem[61697] = 11187418
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mem[6630] = 12436270
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mem[4608] = 14005
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mem[10241] = 782600
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mem[42500] = 58188815
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mem[11694] = 11887
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mem[39816] = 128889468
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mem[37274] = 5127
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mem[48960] = 4760103
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mask = 00011000001X1X1010000X01110X00X0X001
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mem[4608] = 1170
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mem[30523] = 52724553
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mem[11679] = 12049
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mem[338] = 18404
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mem[36800] = 1073142
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mask = XX101000101010000101001000100X1100X0
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mem[25041] = 33614936
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mem[19637] = 12910
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mem[13568] = 975118
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||||
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||||
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||||
mem[4651] = 9924
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||||
mem[61289] = 2749110
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||||
mem[57251] = 19712904
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||||
mask = X0X1101001100X10X10X11001X0101011010
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||||
mem[24158] = 8884236
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||||
mem[22515] = 1409
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||||
mem[22964] = 183923110
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||||
mem[33878] = 885936
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||||
mem[44538] = 874947
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||||
mem[5990] = 363
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||||
mask = 0X11X101011XX111011010X1X0X01101X001
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||||
mem[27091] = 1044
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||||
mem[57617] = 3722045
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||||
mask = 0XX11X101110010X010X101XX0X111010X11
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||||
mem[26059] = 13841479
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||||
mem[55461] = 4252699
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||||
mem[56882] = 25286
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||||
mem[55972] = 1008168
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mem[60550] = 1965604
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||||
mem[43412] = 861720
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||||
mask = 1X11000XX1011X100010101X0XX10X1011X0
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||||
mem[54042] = 883549632
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||||
mem[65377] = 94416
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mem[33534] = 13467
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mask = 00111000011111110X01X1XX100101011X11
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||||
mem[21993] = 74
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||||
mem[49628] = 5558
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||||
mem[61750] = 475383817
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||||
mem[36392] = 32630
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||||
mask = 111X10001X1X01001X0110X0001010010100
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||||
mem[52078] = 214690759
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||||
mem[62049] = 235777
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||||
mem[55972] = 162504
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||||
mem[28257] = 1771
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||||
mem[49729] = 23532
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||||
mem[3769] = 475930259
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||||
mem[50832] = 7539691
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||||
mask = 01011X01010011111X00111111X111000X01
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||||
mem[47391] = 294107389
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||||
mem[41571] = 33636200
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||||
mem[34344] = 4779864
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||||
mem[5210] = 14455055
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mem[55569] = 294086
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||||
mem[14810] = 19093
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||||
mask = 011110101110X10X01XX11110X1100110010
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||||
mem[43678] = 103962743
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||||
mem[46649] = 174
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||||
mem[17417] = 51516531
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||||
mem[44279] = 13699
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||||
mem[29723] = 382196268
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||||
mask = 0X1X10X0X11011000X00111100X1001X0X00
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||||
mem[58181] = 7631
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||||
mem[54660] = 18
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||||
mem[62624] = 65676864
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mem[7637] = 682188755
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mem[30523] = 54181
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||||
mask = X001100001X00101X000010101011010100X
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||||
mem[62308] = 3258008
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||||
mem[54316] = 546
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||||
mem[35020] = 84582
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||||
mem[63858] = 243188165
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||||
mem[20003] = 1739942
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||||
mask = 0XX01X10X1101100X1X010111X0110XX0001
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||||
mem[62495] = 31369385
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||||
mem[30172] = 50943552
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||||
mem[43610] = 56640
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||||
mem[25863] = 5589
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||||
mask = XX1X100001100100000100X1110010111000
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||||
mem[15271] = 1383
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||||
mem[30514] = 517505
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||||
mem[53271] = 1003887
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||||
mem[30597] = 198292
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||||
mem[60624] = 498352568
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||||
mem[41024] = 5218437
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||||
mask = 001XX00001110100X0011100X0000000011X
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||||
mem[21892] = 29032569
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||||
mem[48960] = 7348953
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||||
mem[34838] = 5416170
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||||
mem[54039] = 3631
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||||
mem[3062] = 651155
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||||
mask = 101100001X11X11X000X010X11010X000110
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||||
mem[45244] = 490449
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||||
mem[2123] = 368294
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||||
mem[45758] = 1822
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||||
mem[40631] = 245598209
|
||||
mem[36989] = 3830384
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||||
mem[6227] = 5405426
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||||
mem[6315] = 11116
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||||
mask = X0011000X0X01101100XXX11111001100001
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||||
mem[51307] = 11819100
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||||
mem[10561] = 605909523
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||||
mem[27387] = 31698
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||||
mem[25513] = 458925821
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||||
mem[37018] = 522164
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||||
mem[18187] = 13328
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||||
mask = 0X0X10X00110X1000X000X1X1100000100X0
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||||
mem[64601] = 63
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||||
mem[1569] = 42324
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||||
mem[11413] = 640
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||||
mask = 00X110000X1011XXX000000X11000000XX01
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||||
mem[7713] = 14341
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||||
mem[11413] = 4062857
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||||
mem[60014] = 2945180
|
||||
mask = 011X1010111011000X00X111X0110110000X
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||||
mem[7637] = 7272948
|
||||
mem[53569] = 499905
|
||||
mem[16193] = 26937
|
||||
mem[26059] = 54033
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||||
mask = 0XXX1100X01XX101010001001010XX001111
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||||
mem[45815] = 2006054
|
||||
mem[39698] = 7265
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||||
mem[45186] = 596544
|
||||
mem[32965] = 2713
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||||
mem[28434] = 980517
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||||
mem[45787] = 558823
|
||||
mem[61407] = 448340333
|
||||
mask = X0101000011011000X0X001111011X100101
|
||||
mem[65392] = 7496387
|
||||
mem[3310] = 10949
|
||||
mem[54021] = 1018
|
||||
mem[39182] = 1015
|
||||
mask = 00011X00XX10110X0X00000XX000000010XX
|
||||
mem[29258] = 32355
|
||||
mem[21927] = 415005978
|
||||
mem[7720] = 400318
|
||||
mask = XX101X00001011X010011110100001X10011
|
||||
mem[19357] = 698
|
||||
mem[39816] = 38859710
|
||||
mem[33161] = 721879
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||||
mem[51029] = 1020
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||||
mem[63289] = 63403541
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||||
mem[44874] = 130864184
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||||
mem[22915] = 165664389
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||||
mask = 001110000111X1XX0X0X1XX1100X010X1110
|
||||
mem[42040] = 243356019
|
||||
mem[37748] = 7353
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||||
mem[62516] = 326
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||||
mem[16620] = 361
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||||
mem[64585] = 46439
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||||
mem[28563] = 1986
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||||
mem[39009] = 628217
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||||
mask = 01X11X01010011X100101X010000101101X1
|
||||
mem[24198] = 1466
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||||
mem[15002] = 634696
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||||
mem[26199] = 119807597
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||||
mem[23206] = 655878
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||||
mem[8193] = 4004526
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||||
mem[41317] = 2850662
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||||
mask = 1110X0001110X10001101000X100000000X0
|
||||
mem[44279] = 36824
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||||
mem[26815] = 6522802
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||||
mem[14909] = 17326
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||||
mask = 0001110001X0110110XX00011X10X1001000
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||||
mem[1962] = 1442842
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||||
mem[57522] = 3608
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||||
mem[63355] = 1650944
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||||
mem[56904] = 2521022
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||||
mask = XXX111XX1110X10101001X01001111000XX1
|
||||
mem[56039] = 13855
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||||
mem[48222] = 13842
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||||
mem[57251] = 110043295
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||||
mem[896] = 7181
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||||
mem[64594] = 3483
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||||
mask = 00011X000X1011001000011111XX00100010
|
||||
mem[41571] = 63539
|
||||
mem[39714] = 1004729334
|
||||
mem[33630] = 31829390
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||||
mask = 001010011010X1001XX00000X1000110011X
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||||
mem[12774] = 219393591
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||||
mem[39801] = 6063
|
||||
mem[17417] = 188732
|
||||
mem[33878] = 117640
|
||||
mem[9589] = 349
|
||||
mask = 1011X00011X11X1000X011100X0111000X01
|
||||
mem[50450] = 627875
|
||||
mem[64553] = 99
|
||||
mem[64585] = 1273168
|
||||
mem[6757] = 3017
|
||||
mem[14356] = 5008
|
||||
mem[29258] = 1655
|
||||
mem[11413] = 60359360
|
||||
mask = 0010X0X0XX101100010X001111X1X1110001
|
||||
mem[37311] = 436389854
|
||||
mem[62848] = 350102481
|
||||
mem[54021] = 3272
|
||||
mem[13433] = 2181
|
||||
mem[32818] = 1561170
|
||||
mem[61100] = 144227
|
||||
mask = 0111110X011X11X10100111XX00XX101XX01
|
||||
mem[51399] = 1972
|
||||
mem[5042] = 926644
|
||||
mem[11375] = 259250573
|
||||
mem[41416] = 936
|
||||
mem[12700] = 246505
|
||||
mem[57540] = 2923524
|
||||
mem[8321] = 70934934
|
||||
mask = 0X11X0000110010000001001XX0000110X10
|
||||
mem[21546] = 912416315
|
||||
mem[29145] = 99559
|
||||
mem[16528] = 29459665
|
||||
mem[13846] = 6110601
|
||||
mem[6104] = 13330
|
||||
mem[62308] = 31534
|
||||
mem[64601] = 494
|
||||
mask = 0001X1X101101X0X1X00X101101X1011010X
|
||||
mem[35524] = 261536
|
||||
mem[39801] = 310749971
|
||||
mem[46522] = 1236
|
||||
mem[4129] = 1844
|
||||
mem[6315] = 6569
|
||||
mem[32886] = 168
|
||||
mem[42248] = 11892434
|
||||
mask = 1XX11001110X000010000X00000X00100001
|
||||
mem[34337] = 3847
|
||||
mem[8390] = 8155520
|
||||
mem[62768] = 5218234
|
||||
mem[29841] = 249705
|
||||
mask = 01011101X10X1111000011X1101XX1110101
|
||||
mem[40491] = 11567
|
||||
mem[29057] = 5710533
|
||||
mem[7221] = 1098
|
||||
mem[57270] = 997670442
|
||||
mask = 001010X100101X00X00001XX01X000011010
|
||||
mem[54373] = 3875
|
||||
mem[41275] = 111847
|
||||
mem[15151] = 45571
|
||||
mem[22776] = 8162199
|
||||
mask = X01110X0111XXX0000001X11111110000X01
|
||||
mem[106] = 5774051
|
||||
mem[41573] = 7822355
|
||||
mask = 001110X0011X01X00X0X110X0X0000010X1X
|
||||
mem[39101] = 17209596
|
||||
mem[57877] = 216131041
|
||||
mem[63978] = 643398
|
||||
mem[10351] = 15285
|
||||
mem[35863] = 23302872
|
||||
mask = 001010X011101100010001X0100101X0000X
|
||||
mem[20499] = 211562966
|
||||
mem[46546] = 1635565
|
||||
mem[45815] = 18600505
|
||||
mem[65441] = 25793
|
||||
mem[48867] = 4021120
|
||||
mask = X11010001110X10001X011X001001X1100XX
|
||||
mem[49457] = 476570
|
||||
mem[26669] = 4266538
|
||||
mem[50839] = 9507231
|
||||
mem[54766] = 1208643
|
||||
mem[49279] = 2607329
|
||||
mem[20912] = 1119428
|
||||
mask = 00X111X011X0110100000001001001001X10
|
||||
mem[3981] = 28411
|
||||
mem[1880] = 357278
|
||||
mem[31243] = 162
|
||||
mask = 00011100X1X0X101000X000110XXX1011000
|
||||
mem[26881] = 21252
|
||||
mem[10018] = 6965635
|
||||
mem[47777] = 33385526
|
||||
mem[46651] = 214034
|
||||
mem[42585] = 40702649
|
||||
mem[55569] = 20351
|
||||
mem[23923] = 253114336
|
||||
mask = 00XX100000101100X00X1110111XX00101X0
|
||||
mem[29597] = 1149
|
||||
mem[21886] = 38689097
|
||||
mem[37141] = 700
|
||||
mem[19653] = 273424
|
||||
mem[50472] = 7691440
|
||||
mask = XX111X10X111X10001X001X1X1011011X011
|
||||
mem[8566] = 25451836
|
||||
mem[39771] = 4721485
|
||||
mem[44687] = 6594426
|
||||
mem[42570] = 361
|
||||
mem[14627] = 64772285
|
||||
mem[48337] = 1264
|
||||
mask = X010X0011101001010X0111X000111X000XX
|
||||
mem[54859] = 36075224
|
||||
mem[61289] = 1247
|
||||
mem[31793] = 19842184
|
||||
mem[15612] = 404768
|
||||
mask = 10110X01110X1X1000100X1X00100011110X
|
||||
mem[41092] = 29758
|
||||
mem[58134] = 1780
|
||||
mem[30647] = 865419
|
||||
mem[46184] = 133
|
||||
mask = 0XX1110101X011X1XXX00011X0X011010001
|
||||
mem[52020] = 14383756
|
||||
mem[64473] = 2371708
|
||||
mem[53688] = 3645018
|
||||
mem[62848] = 112067628
|
||||
mem[25377] = 5361
|
||||
mem[40061] = 584
|
||||
mem[57896] = 4809281
|
||||
mask = 0001X1X10X1X1X001X00001X1X0000100100
|
||||
mem[50150] = 1695
|
||||
mem[58420] = 95104341
|
||||
mem[60817] = 4009428
|
||||
mem[29926] = 1556
|
||||
mem[28188] = 165994572
|
||||
mem[44315] = 2054
|
||||
mask = 0111X0001110X100X000X11111011110000X
|
||||
mem[40090] = 53578
|
||||
mem[61376] = 125798
|
||||
mem[59920] = 2637064
|
||||
mem[31522] = 223908
|
||||
mem[41317] = 11020
|
||||
mem[64504] = 60087919
|
||||
mem[29083] = 165056
|
||||
mask = 00X110000110X10X000000X1X0000010X00X
|
||||
mem[63634] = 156131519
|
||||
mem[63499] = 37794
|
||||
mem[54660] = 213384
|
||||
mem[19357] = 291569507
|
||||
mem[11793] = 44425775
|
||||
mem[1569] = 1499
|
||||
mask = 0111X1XX1110XX0100001011X010X0111010
|
||||
mem[17747] = 687783
|
||||
mem[47527] = 43313
|
||||
mem[46385] = 30062259
|
||||
mem[39435] = 6225
|
||||
mask = 00111110111001X0X1XX1X0X10X11X010011
|
||||
mem[60773] = 4068534
|
||||
mem[46727] = 88487
|
||||
mem[45335] = 2899
|
||||
mem[55714] = 3991
|
||||
mask = 01X11X0010111111X11X11X0100001010001
|
||||
mem[50543] = 70
|
||||
mem[28563] = 17930
|
||||
mem[14417] = 107070185
|
||||
mem[19810] = 530758
|
||||
mem[26195] = 352915721
|
||||
mem[23620] = 541394
|
||||
mem[51609] = 68738
|
||||
mask = 1010100X01X01X0000X01X1X11001XX01101
|
||||
mem[30706] = 33489
|
||||
mem[3614] = 97141
|
||||
mem[47530] = 61588428
|
||||
mem[54451] = 37
|
||||
mem[17417] = 3467253
|
||||
mask = 0XX0X10X00X0XX001X0010100X1000100101
|
||||
mem[61965] = 25976999
|
||||
mem[52290] = 83693474
|
||||
mem[10104] = 172902064
|
||||
mask = 10101001X100110000X0X111110X11111X10
|
||||
mem[51399] = 42079173
|
||||
mem[10104] = 60
|
||||
mem[42192] = 761948
|
||||
mask = 01111X1X111001010XX01111X1111101X011
|
||||
mem[15002] = 5761
|
||||
mem[57522] = 781049282
|
||||
mem[58771] = 36590
|
||||
mem[50845] = 895780041
|
||||
mask = 1110100X1110X10001X011X0100X1X11XX0X
|
||||
mem[28451] = 29180808
|
||||
mem[49154] = 106361
|
||||
mem[19472] = 962416
|
||||
mask = X001X1XX011010001X00X1111010X011100X
|
||||
mem[472] = 20077
|
||||
mem[44685] = 88446
|
||||
mem[46048] = 3015039
|
||||
mem[61697] = 1680
|
||||
mem[65441] = 420953
|
||||
mask = 010111X0001XX100010001101X0000001011
|
||||
mem[7230] = 105401132
|
||||
mem[37903] = 49164
|
||||
mem[2407] = 15927
|
||||
mem[62905] = 2466
|
||||
mem[6996] = 275026478
|
||||
mask = 0010X0X0111011000X00101X010000101100
|
||||
mem[20747] = 130064892
|
||||
mem[227] = 14848571
|
||||
mask = 1X101X0011100100X10X11000XX00XX0010X
|
||||
mem[18075] = 4105
|
||||
mem[7692] = 10369
|
||||
mem[34480] = 70016
|
||||
mem[54747] = 178664159
|
||||
mem[31770] = 4308718
|
||||
mem[25940] = 286972
|
||||
mask = 1X1X100011110X10X000X00XX01001000001
|
||||
mem[18927] = 433001153
|
||||
mem[56004] = 381
|
||||
mem[7713] = 560209289
|
||||
mem[55758] = 1791814
|
||||
mem[12953] = 174435
|
||||
mem[40556] = 1415
|
||||
mask = X01X101001110XX00001000X10000X010000
|
||||
mem[62126] = 15628
|
||||
mem[53714] = 392410
|
||||
mem[49154] = 13065
|
||||
mask = 001X1000X0X010XX01X0X000X1000000X100
|
||||
mem[8723] = 64433454
|
||||
mem[6757] = 1682978
|
||||
mem[60483] = 13735
|
||||
mask = 01011X01011XX1111X001X110000X01100XX
|
||||
mem[64013] = 806538
|
||||
mem[51273] = 32346
|
||||
mask = 00X11101011011010110101X0011110XX001
|
||||
mem[55121] = 416007913
|
||||
mem[44077] = 5865583
|
||||
mem[64585] = 323728
|
||||
mask = 101X100X11X100X01000100X01000X100001
|
||||
mem[60817] = 42192
|
||||
mem[6757] = 4925545
|
||||
mem[33281] = 6862960
|
||||
mem[21115] = 11608810
|
||||
mask = XXX0X11000101X010100X010101X10001000
|
||||
mem[42505] = 6795
|
||||
mem[27245] = 671587340
|
||||
mem[43412] = 8741321
|
||||
mem[2793] = 1114109
|
||||
mem[34194] = 2767551
|
||||
mask = 0X111X0001111101010010001001XX1X1110
|
||||
mem[21794] = 1041902
|
||||
mem[22992] = 3666
|
||||
mem[63730] = 46469539
|
||||
mask = 000110X10X001101X00X011110X011010001
|
||||
mem[6617] = 22675825
|
||||
mem[9131] = 24859225
|
||||
mask = 001X1X0XX010X10010001X0001000010XX10
|
||||
mem[28267] = 491581202
|
||||
mem[7622] = 154622
|
||||
mem[49279] = 1164052
|
||||
mem[6361] = 62173
|
||||
mem[29823] = 6599915
|
||||
mask = 01X0XX1X0X10110101001010101XX11X1000
|
||||
mem[50472] = 5878
|
||||
mem[3981] = 896
|
||||
mem[39714] = 74
|
||||
mem[6898] = 1993
|
||||
mem[8193] = 487
|
||||
mask = 0001X100111011X000000110X00X01000000
|
||||
mem[25162] = 323406673
|
||||
mem[43610] = 647412
|
||||
mem[54042] = 811029198
|
||||
mem[13461] = 33008731
|
||||
mem[17432] = 766541
|
||||
mem[45290] = 167819285
|
||||
mask = 00110X000110010000XXX111011101010010
|
||||
mem[10481] = 1969
|
||||
mem[61056] = 100302708
|
||||
mem[62768] = 97484359
|
||||
mask = 0X0XX100001X11XX0100010010X001001X10
|
||||
mem[11117] = 90479
|
||||
mem[51399] = 5088
|
||||
mem[65489] = 273
|
||||
mem[29185] = 9519
|
||||
mem[46096] = 669
|
||||
mask = 01111X0XXX111X11X1X01010100X01X00001
|
||||
mem[6256] = 8901226
|
||||
mem[38934] = 11506
|
||||
mem[4000] = 49916408
|
||||
mem[31753] = 7960142
|
||||
mem[61777] = 22041
|
||||
mask = X11110001110110X000X011100X00XX00001
|
||||
mem[37652] = 309890
|
||||
mem[4955] = 6491368
|
||||
mask = 0X1X110000X00X001000011000100110X011
|
||||
mem[35882] = 20171
|
||||
mem[14041] = 542
|
||||
mem[973] = 33148060
|
||||
mem[61056] = 2230
|
||||
mem[30545] = 2890
|
||||
mem[48094] = 745799437
|
||||
mask = 1011000011X1111000X0X1XX11X1X10X0101
|
||||
mem[61322] = 765242
|
||||
mem[6315] = 7001612
|
||||
mem[11278] = 12973
|
||||
mem[59259] = 2040
|
||||
mem[46184] = 498
|
||||
mask = X01X10101X1X0100000X10101011X110X011
|
||||
mem[1103] = 6682
|
||||
mem[49066] = 528792283
|
||||
mem[42040] = 222766
|
||||
|
|
@ -0,0 +1,162 @@
|
|||
use std::collections::HashMap;
|
||||
use std::fs;
|
||||
|
||||
use itertools::Itertools;
|
||||
use lazy_static::lazy_static;
|
||||
use regex::Regex;
|
||||
|
||||
const MASK_36_BITS: u64 = 0xFFFFFFFFF;
|
||||
|
||||
fn main() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let input = fs::read_to_string("input")?;
|
||||
let program = parse_program(&input)?;
|
||||
|
||||
// Part 1
|
||||
let memory = run_program_chip1(&program);
|
||||
println!("{}", memory.iter().map(|(_, value)| value).sum::<u64>());
|
||||
|
||||
// Part 2
|
||||
let memory = run_program_chip2(&program);
|
||||
println!("{}", memory.iter().map(|(_, value)| value).sum::<u64>());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, Debug)]
|
||||
enum Instruction {
|
||||
Mask(u64, u64, u64),
|
||||
Mem(u64, u64),
|
||||
}
|
||||
|
||||
impl Instruction {
|
||||
fn new(instruction: &str) -> Result<Self, String> {
|
||||
lazy_static! {
|
||||
static ref INSTRUCTION_RE: Regex =
|
||||
Regex::new(r"([[:alpha:]]+?)\[?(\d+?)?\]? = ([0-9X]+)")
|
||||
.expect("Regex should compile");
|
||||
}
|
||||
|
||||
let caps = INSTRUCTION_RE
|
||||
.captures(instruction)
|
||||
.ok_or("Instruction did not match")?;
|
||||
|
||||
Ok(match &caps[1] {
|
||||
"mask" => {
|
||||
let and = u64::from_str_radix(&caps[3].replace("X", "1"), 2)
|
||||
.map_err(|e| format!("Could not parse and: {}", e))?;
|
||||
let or = u64::from_str_radix(&caps[3].replace("X", "0"), 2)
|
||||
.map_err(|e| format!("Could not parse or: {}", e))?;
|
||||
|
||||
Instruction::Mask(and, or, and ^ or)
|
||||
}
|
||||
"mem" => {
|
||||
let location = caps[2]
|
||||
.parse()
|
||||
.map_err(|e| format!("Could not parse location: {}", e))?;
|
||||
let value = caps[3]
|
||||
.parse()
|
||||
.map_err(|e| format!("Could not parse value: {}", e))?;
|
||||
|
||||
Instruction::Mem(location, value)
|
||||
}
|
||||
_ => Err("Invalid instruction")?,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_program(input: &str) -> Result<Vec<Instruction>, String> {
|
||||
input.lines().map(Instruction::new).collect()
|
||||
}
|
||||
|
||||
fn run_program_chip1(program: &Vec<Instruction>) -> Vec<(u64, u64)> {
|
||||
let mut mask = (u64::max_value() & MASK_36_BITS, 0);
|
||||
|
||||
program
|
||||
.iter()
|
||||
.filter_map(|instruction| match instruction {
|
||||
Instruction::Mask(and, or, _) => {
|
||||
mask = (*and, *or);
|
||||
None
|
||||
}
|
||||
Instruction::Mem(address, value) => Some((*address as u64, value & mask.0 | mask.1)),
|
||||
})
|
||||
.collect::<Vec<(u64, u64)>>()
|
||||
.into_iter()
|
||||
.rev()
|
||||
.unique_by(|address| address.0)
|
||||
.collect()
|
||||
}
|
||||
|
||||
fn run_program_chip2(program: &Vec<Instruction>) -> Vec<(u64, u64)> {
|
||||
let mut memory = HashMap::new();
|
||||
let mut mask = (0, 0);
|
||||
|
||||
for instruction in program {
|
||||
match instruction {
|
||||
Instruction::Mask(_, or, floating) => {
|
||||
mask = (*or, *floating);
|
||||
}
|
||||
Instruction::Mem(address, value) => {
|
||||
// We set floating bits to 0 here, so that they can be
|
||||
// toggled with addition
|
||||
let base = (address | mask.0) & !mask.1 & MASK_36_BITS;
|
||||
|
||||
let mut floating = !mask.1 & MASK_36_BITS;
|
||||
while floating <= MASK_36_BITS {
|
||||
// For each unset bit in the floating mask, we
|
||||
// toggle the bit in the address
|
||||
memory.insert(base | (!floating & MASK_36_BITS), *value);
|
||||
floating += 1;
|
||||
|
||||
// Since add does overflows, we reset 1s to 0s if
|
||||
// they're unset in the original mask
|
||||
floating |= !mask.1 & MASK_36_BITS;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
memory.drain().collect()
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use indoc::indoc;
|
||||
|
||||
#[test]
|
||||
fn test_simple() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let input = indoc!(
|
||||
"
|
||||
mask = XXXXXXXXXXXXXXXXXXXXXXXXXXXXX1XXXX0X
|
||||
mem[8] = 11
|
||||
mem[7] = 101
|
||||
mem[8] = 0
|
||||
"
|
||||
);
|
||||
|
||||
let program = parse_program(input)?;
|
||||
let memory = run_program_chip1(&program);
|
||||
|
||||
assert_eq!(memory.iter().map(|(_, value)| value).sum::<u64>(), 165);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_simple2() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let input = indoc!(
|
||||
"
|
||||
mask = 000000000000000000000000000000X1001X
|
||||
mem[42] = 100
|
||||
mask = 00000000000000000000000000000000X0XX
|
||||
mem[26] = 1
|
||||
"
|
||||
);
|
||||
|
||||
let program = parse_program(input)?;
|
||||
let memory = dbg!(run_program_chip2(&program));
|
||||
|
||||
assert_eq!(memory.iter().map(|(_, value)| value).sum::<u64>(), 208);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue