From 9b0b5326ff4a5bfc20e24d44aaf967fb48db8eb8 Mon Sep 17 00:00:00 2001 From: Tom Smeding Date: Wed, 16 Dec 2020 22:00:50 +0100 Subject: Day 14 --- 2020/14.hs | 61 +++++++ 2020/14.in | 577 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 638 insertions(+) create mode 100644 2020/14.hs create mode 100644 2020/14.in (limited to '2020') diff --git a/2020/14.hs b/2020/14.hs new file mode 100644 index 0000000..4a4e24d --- /dev/null +++ b/2020/14.hs @@ -0,0 +1,61 @@ +module Main where + +import Data.Bits +import qualified Data.IntMap.Strict as IM +import Data.IntMap.Strict (IntMap) +import Data.List (foldl') + +import Input + + +subsets :: [a] -> [[a]] +subsets [] = [[]] +subsets (x:xs) = subsets xs ++ map (x:) (subsets xs) + +data Mask = Mask Int Int + deriving (Show) + +applyMask :: Mask -> Int -> Int +applyMask (Mask set reset) n = (n .|. set) .&. complement reset + +data Instr = SetMask Mask | Store Int Int + deriving (Show) + +parseInstr :: String -> Instr +parseInstr str + | str !! 1 == 'a' = SetMask (parseMask (drop 7 str)) + | [(idx, rest)] <- reads (drop 4 str) = Store idx (read (drop 4 rest)) + | otherwise = error "Can't parse Instr" + +parseMask :: String -> Mask +parseMask s = + let pairs = zip s (map bit [35,34..0]) + setbits = sum . map snd . filter ((== '1') . fst) $ pairs + resetbits = sum . map snd . filter ((== '0') . fst) $ pairs + in Mask setbits resetbits + +data State = State { sMask :: Mask, sMem :: IntMap Int } + deriving (Show) + +exec1 :: State -> Instr -> State +exec1 (State _ mem) (SetMask mask) = State mask mem +exec1 (State mask mem) (Store idx val) = + State mask (IM.insert idx (applyMask mask val) mem) + +expandWithMask :: Mask -> Int -> [Int] +expandWithMask (Mask ones zeros) n = + let floating = (bit 36 - 1) .&. complement (ones .|. zeros) + n' = (n .|. ones) .&. complement floating + singlebits = [bit i | i <- [0..35], testBit floating i] + in map ((n' .|.) . sum) (subsets singlebits) + +exec2 :: State -> Instr -> State +exec2 (State _ mem) (SetMask mask) = State mask mem +exec2 (State mask mem) (Store idx val) = + State mask (foldr (\idx' -> IM.insert idx' val) mem (expandWithMask mask idx)) + +main :: IO () +main = do + input <- map parseInstr <$> getInput 14 + print (sum . IM.elems . sMem $ foldl' exec1 (State (Mask 0 0) mempty) input) + print (sum . IM.elems . sMem $ foldl' exec2 (State (Mask 0 0) mempty) input) diff --git a/2020/14.in b/2020/14.in new file mode 100644 index 0000000..ed9db2e --- /dev/null +++ b/2020/14.in @@ -0,0 +1,577 @@ +mask = 0000011011111X1001100X0001X1001100X0 +mem[43805] = 6934 +mem[57564] = 3741 +mem[28260] = 67554 +mem[16151] = 813 +mem[3058] = 873646 +mem[51717] = 270314 +mask = 1001X1X011110XX111100001100111001110 +mem[16252] = 730 +mem[28701] = 63670997 +mem[28652] = 9219200 +mem[64761] = 488985928 +mask = 0X01X10X1XX1010111100100100111101001 +mem[2833] = 52082550 +mem[59636] = 6574572 +mem[26957] = 62766 +mask = 00X0XX101X111X1001011111000101000101 +mem[54455] = 839691 +mem[65381] = 2671752 +mem[8488] = 4031472 +mem[5618] = 549 +mem[41399] = 5232 +mem[62807] = 201160 +mem[63847] = 201082 +mask = X000X10011X1X100011X0001000010000110 +mem[47360] = 44151287 +mem[46338] = 79342985 +mem[6868] = 11520126 +mem[27037] = 20408 +mem[25014] = 758862851 +mask = 100001X01111110X0X110001X0101010010X +mem[21679] = 5106103 +mem[12306] = 690264 +mask = 0000011111X1XX1X0XX10000011000000110 +mem[19803] = 179348214 +mem[19095] = 125150056 +mem[34147] = 1407927 +mem[41272] = 5775647 +mask = X00X01001X0111X101110X0001X110000XXX +mem[53665] = 290143 +mem[20519] = 265 +mem[44017] = 834 +mem[41856] = 435 +mem[43805] = 2264115 +mask = 1X0X0111111X1X010110X10000011X1XX101 +mem[52128] = 1029842 +mem[27168] = 222084 +mask = 10011100111111X100110X0XX11111011100 +mem[62082] = 9135 +mem[14654] = 3686 +mem[25450] = 1593529 +mem[1497] = 5749950 +mem[30570] = 5450 +mem[2144] = 106125340 +mem[1099] = 9136 +mask = 1000110XX00X10110111X0X00011X0XX0000 +mem[14922] = 97221103 +mem[26301] = 11154 +mem[47381] = 94170015 +mem[31162] = 36266349 +mem[24087] = 2020 +mask = 1100111111X0XX0X00110000110001010000 +mem[45973] = 3120 +mem[38175] = 307 +mem[58216] = 332810821 +mem[14799] = 3922 +mem[29584] = 14393700 +mem[51240] = 61932467 +mask = 00010X1X10011110X110X101X00001010X11 +mem[58448] = 26283204 +mem[16738] = 466633 +mem[6096] = 369 +mem[6987] = 4902006 +mask = 110011XX101111110111X000001XX01101XX +mem[2710] = 34047107 +mem[63146] = 116986332 +mask = 0001110011110101111X1X001X011X0101X1 +mem[6096] = 5336 +mem[9192] = 44289 +mem[26857] = 13 +mem[54135] = 1490304 +mem[17220] = 3623 +mem[1210] = 50969 +mask = 00011X0011X111011X00000100X1X100X111 +mem[31556] = 293748 +mem[21644] = 60471 +mem[31567] = 972370 +mem[32315] = 104177 +mem[6429] = 10486 +mem[25892] = 62384267 +mask = 000001001111010110X01000XX01100110X0 +mem[51519] = 214 +mem[55256] = 1197991 +mem[65279] = 178690564 +mem[3173] = 1554206 +mem[10263] = 1704 +mem[55736] = 217069 +mask = X0011100X111X1011XX00000X011110X0101 +mem[52317] = 3581460 +mem[22238] = 92255 +mem[6688] = 29033188 +mem[7311] = 1092 +mem[1099] = 379272 +mem[5143] = 9437126 +mask = X0XX01111111111001X10X00110011101010 +mem[23050] = 9416 +mem[34100] = 821285 +mem[62807] = 1156515 +mask = 1001110010X11X111X11011001001X1111X1 +mem[50851] = 1266 +mem[23545] = 177017 +mem[12266] = 483 +mask = 0011X01001010X00101X000011X001110000 +mem[11872] = 12823 +mem[1831] = 38511 +mem[25974] = 553433 +mem[49217] = 1793537 +mem[37800] = 372 +mask = 10001101X0XX1011011101011XXX00000001 +mem[34122] = 466038899 +mem[775] = 32552509 +mem[32422] = 25983159 +mem[46550] = 4296 +mask = 1000X100111111XX01X1001X101010100110 +mem[31650] = 10524288 +mem[6322] = 140581 +mem[10638] = 3290724 +mem[35709] = 137485 +mem[20467] = 175698926 +mask = 1X100011X011X111X11X1001X10010X11X10 +mem[62710] = 140559632 +mem[26295] = 506581898 +mem[23934] = 2027 +mem[1770] = 1402 +mem[59755] = 3234994 +mem[27304] = 923348 +mask = 0000010X11111X00011010100X110010X111 +mem[6824] = 46336422 +mem[56833] = 41706 +mem[45316] = 1198 +mem[39426] = 48436 +mask = 100001001101X1X00111XXXX01X0100XX000 +mem[58691] = 16515016 +mem[11879] = 1449419 +mem[22694] = 1761 +mem[4517] = 6645515 +mem[25556] = 3758 +mem[6868] = 28390000 +mem[32545] = 304290 +mask = X00001X01XX111XX011101010X0X101X0110 +mem[49156] = 266240397 +mem[4497] = 84363 +mem[29232] = 126554202 +mem[12306] = 155188 +mem[48047] = 22264 +mask = X10X110111100X0X011XX0111111XX10001X +mem[31701] = 73338 +mem[31978] = 1151135 +mem[7483] = 479508851 +mem[36135] = 3964640 +mem[45859] = 62507 +mem[62676] = 99387068 +mask = 0100X11110101XX1011010001X000X111100 +mem[44119] = 222861 +mem[16458] = 1512948 +mem[45791] = 21526597 +mem[19808] = 2902702 +mem[6868] = 2678 +mem[21659] = 112735 +mask = X1001XX11110X1010X11X01101111XX0X101 +mem[30512] = 802102210 +mem[27203] = 3779646 +mem[16581] = 238152 +mem[16257] = 5959659 +mem[39296] = 63813 +mem[16174] = 87595 +mem[10104] = 1072 +mask = 0000011XX1X1X1X0X11X001X000110000010 +mem[28838] = 5264 +mem[42509] = 111014106 +mem[24905] = 521203049 +mem[9718] = 15454 +mem[16951] = 22743 +mask = 100X0101X1110101X0X0X0010101110100X1 +mem[7483] = 40730 +mem[9639] = 13929656 +mem[25817] = 2819 +mem[16257] = 274898612 +mem[55439] = 598143974 +mask = 110011111110X11101X0000X1010X110000X +mem[37397] = 3714 +mem[54979] = 794 +mem[1014] = 3463104 +mem[50612] = 194522027 +mem[4969] = 337504357 +mem[53665] = 766941 +mask = 1X00X111111X1111011110001X11100011XX +mem[24546] = 1830044 +mem[57219] = 94920 +mem[31992] = 29180 +mem[34078] = 227189 +mem[59660] = 111830573 +mem[58661] = 248870 +mem[15971] = 175220352 +mask = 00000XX0X11X01000XX00111000X0000X010 +mem[1571] = 215979 +mem[14641] = 30916273 +mem[14751] = 102869423 +mem[19244] = 8960072 +mask = 0X100X1001X10001101X0X00X0X0XX010100 +mem[21724] = 288136 +mem[28198] = 22553074 +mem[57765] = 2310045 +mask = 0101X1X1111000X0011X1010111000100110 +mem[10510] = 8313 +mem[5922] = 72921 +mem[64407] = 1556 +mem[25450] = 1777041 +mem[28796] = 2327 +mem[59755] = 21569957 +mem[60972] = 2783427 +mask = 100011X1100110110X1101011X100X010111 +mem[40715] = 959356 +mem[63146] = 122011 +mem[19713] = 1825336 +mem[45607] = 218 +mask = 100111001XX11X11101101XX1X110101X0X1 +mem[12007] = 98 +mem[26115] = 141260 +mem[54804] = 1053489 +mem[13804] = 14284 +mem[61114] = 912 +mask = 00X0001X01X10X0110X0010101000X0010XX +mem[17557] = 140533204 +mem[26033] = 2041132 +mask = 10X111010X1X11X0001101X10X1000111X01 +mem[38981] = 1634 +mem[18192] = 56914 +mem[59630] = 563 +mask = 1X0X110111110X01101X00011101X1001101 +mem[41221] = 497 +mem[56726] = 8181081 +mem[1971] = 188296 +mask = 100X11001111111X0X110X00101011010100 +mem[21216] = 381876688 +mem[34122] = 2467929 +mem[2144] = 96144 +mem[54135] = 13354 +mem[53720] = 150 +mem[32315] = 54538146 +mask = 0000X10X11111100011010010XXX0010X000 +mem[18215] = 31721 +mem[32721] = 9183703 +mem[19864] = 62401757 +mem[35244] = 775737 +mem[41775] = 8351542 +mask = 110X01X011X1111011XXX00011X000X11011 +mem[17028] = 8956 +mem[6912] = 1617661 +mem[15337] = 11644529 +mem[43968] = 14512 +mem[8379] = 45870175 +mem[27993] = 549587 +mask = 00X00XX0010100001010010X0110010000X0 +mem[14444] = 53809059 +mem[12350] = 50956019 +mem[26924] = 27242111 +mem[15497] = 25477955 +mem[11723] = 28495396 +mem[22036] = 6534 +mask = 11XX1101X1X00000011110111X110111011X +mem[23534] = 1008959 +mem[52268] = 340236 +mem[35387] = 1963826 +mem[51744] = 1389733 +mem[37913] = 626 +mem[50832] = 950206044 +mask = 1000X1XX110111X00X110XXX010111011X10 +mem[1361] = 63857600 +mem[52318] = 239923379 +mem[28591] = 568 +mem[40351] = 27729 +mem[19237] = 603 +mem[38475] = 59358178 +mask = 110001111X1111X1011X000010X0X00101X1 +mem[1940] = 44417 +mem[56833] = 11059 +mem[60379] = 5011 +mem[9192] = 59823 +mem[29224] = 357704 +mem[8154] = 13209 +mask = 1100100XX1100X01X1X10011011110001000 +mem[4930] = 145441 +mem[25421] = 12045 +mem[44108] = 46104 +mask = 1X00X1001111X110X11X1011001X01100X10 +mem[22768] = 3060 +mem[4912] = 261459309 +mem[30948] = 398446577 +mem[56062] = 104 +mask = X00XXX0XX11101011X1001000X0110X11111 +mem[51488] = 749 +mem[56696] = 3357828 +mem[14571] = 9057 +mem[5703] = 88 +mask = 1XX00111XX111111011X10X0101X101X1X11 +mem[22686] = 13095 +mem[59326] = 3001957 +mem[63953] = 71522183 +mem[35214] = 3703802 +mem[48938] = 11233495 +mask = 00X000X1X1X11111X110010X000X10100011 +mem[41999] = 936 +mem[58058] = 261362 +mem[54367] = 2216 +mem[61978] = 70816 +mask = X10X11X1111001000X1X00X011010X0XX110 +mem[45798] = 3907 +mem[6617] = 15512 +mem[56811] = 708 +mask = X0100X11X1111X11011011X1X0011X101X0X +mem[58419] = 3631 +mem[27483] = 38986315 +mem[59244] = 398710 +mem[23764] = 14373 +mem[14069] = 12712994 +mem[40576] = 40270 +mask = 1000110000X11X11011100111X1110000X00 +mem[57219] = 11562875 +mem[41221] = 13920777 +mem[36717] = 3819625 +mask = 1X00X1001X11111X011100XX10100X1100X0 +mem[56785] = 134175 +mem[8778] = 254917 +mem[12948] = 510951 +mem[128] = 860 +mem[11157] = 676314432 +mask = 00000X1X1X1110X00110010X001011001011 +mem[9240] = 1401 +mem[32110] = 1104 +mem[30506] = 88753652 +mem[6582] = 2187931 +mem[12627] = 139691 +mask = 10XX0111X0111111011010001010100X1100 +mem[13077] = 3934 +mem[50479] = 610 +mem[33713] = 72792134 +mem[24686] = 1299 +mem[33343] = 336598 +mask = X00XX10010111110XX00001011X0XX0110X0 +mem[65214] = 6485641 +mem[7967] = 15431108 +mem[54018] = 1706606 +mask = 1X0011X0111111X001110011X00X1111000X +mem[52561] = 13472068 +mem[56018] = 18723453 +mem[42466] = 85170787 +mem[37684] = 1550 +mem[8720] = 738919690 +mask = 100111001X1111XXX01X000X10101101X1XX +mem[53713] = 1151 +mem[50072] = 42179504 +mem[7557] = 536670970 +mem[53473] = 62 +mem[30512] = 1563 +mem[61203] = 123868045 +mem[12947] = 280992 +mask = X00X0X1010011110011X11000000X01X00X0 +mem[53713] = 178290029 +mem[36998] = 5983099 +mem[47628] = 5173 +mask = X000010101110101001000X1X10101000X00 +mem[46136] = 244458655 +mem[52984] = 4858009 +mem[22937] = 6676 +mem[23388] = 375417 +mem[64350] = 969 +mask = 000000X10X1101011010010X00001000X11X +mem[5143] = 27026 +mem[51643] = 38589 +mem[59365] = 1607 +mem[58054] = 1872 +mask = 100111X0101X1110X0100X11111X10010X00 +mem[40606] = 3049691 +mem[12350] = 14661 +mem[35882] = 61044 +mem[14176] = 38552 +mem[2496] = 450375 +mem[46933] = 44633552 +mask = X1X00X110XX1111101101001011000X0101X +mem[43177] = 822529775 +mem[28838] = 223 +mem[10298] = 849778 +mem[43038] = 105444375 +mem[42666] = 5936816 +mask = X001110010111110101X0X0011XX10001100 +mem[2328] = 76985 +mem[3801] = 1771180 +mem[19235] = 134961 +mem[53720] = 97593730 +mask = 1001110011X10XX1111010XX0X01X0111000 +mem[16129] = 1224773 +mem[18934] = 47178 +mem[17977] = 341 +mem[18583] = 2852768 +mask = 0000XX101111101X0101010X0X0X1000010X +mem[50612] = 862 +mem[21286] = 41878 +mem[31874] = 10360641 +mem[65381] = 195095 +mem[61682] = 9060 +mem[32198] = 7428006 +mem[32240] = 49912129 +mask = 001X00100101000X101X00X000XXX101X10X +mem[699] = 21649437 +mem[58127] = 1606 +mem[49337] = 31439847 +mem[3618] = 8032 +mem[29699] = 125520 +mem[29732] = 46761 +mask = 1000010X11X111000XX10101X1X01X100X10 +mem[31281] = 12657 +mem[44108] = 130509615 +mem[19496] = 60937467 +mem[56486] = 3157958 +mem[35746] = 27492 +mask = 1001XX01X111X1X0001X00X1011X00110001 +mem[30357] = 47012 +mem[18233] = 12393 +mem[1099] = 27135 +mask = X1000X111010X1X10110X000X0000011011X +mem[50296] = 1603392 +mem[35873] = 35369472 +mem[17028] = 200141095 +mem[49219] = 16711 +mem[35720] = 9247398 +mem[19911] = 144739658 +mem[7886] = 9679 +mask = 0010001X0111101101X01X0X010100X110X0 +mem[19896] = 217854 +mem[57355] = 922353 +mem[33713] = 141968390 +mem[41095] = 3604 +mem[12007] = 579276 +mask = 000001X011111XXX011XX0010101X00XX010 +mem[63211] = 223085398 +mem[49337] = 262164785 +mem[48047] = 1784038 +mem[50214] = 121056 +mem[16951] = 6863479 +mem[48471] = 5459 +mask = 1000011010011X0X01X1000X0100101XX110 +mem[8379] = 75563320 +mem[48049] = 2046786 +mem[51605] = 95555128 +mem[20519] = 3218 +mem[54018] = 298192086 +mem[52374] = 3157399 +mask = 1X1000110X1111110110100X0100XX1X110X +mem[35163] = 119779 +mem[23965] = 261934 +mem[26814] = 4046757 +mem[56811] = 47723376 +mem[26957] = 4810 +mask = 1X001100X011101X0X111010011010X0X111 +mem[37397] = 896 +mem[33586] = 151022681 +mem[51899] = 249489 +mask = 1000X00XX1X1111011110000110011101011 +mem[59834] = 3647285 +mem[9353] = 3923071 +mask = 0000011111X110110X1X010X0110X0X00110 +mem[42000] = 4165519 +mem[33425] = 36 +mem[1188] = 3503480 +mem[3603] = 532 +mem[4150] = 9701863 +mem[6458] = 11777 +mem[16174] = 55920277 +mask = 01100XXX011100011011011X10101X1X0101 +mem[14799] = 1948676 +mem[45433] = 3277 +mem[43873] = 258105154 +mem[26588] = 467687 +mem[36891] = 44643 +mask = 001X001X010100011011000X000X1000X100 +mem[53654] = 21544645 +mem[48482] = 255962506 +mem[39155] = 6486 +mem[5144] = 1463 +mem[1571] = 184289 +mem[32545] = 3427 +mask = 1X0X0100101XX111011X0X1010100110010X +mem[12534] = 19727 +mem[7245] = 989 +mem[54979] = 56838 +mask = X00111X010XX111000XX0011X01010010100 +mem[47330] = 3421396 +mem[48131] = 29616230 +mem[6868] = 29690 +mem[61114] = 167498 +mem[13174] = 266314582 +mem[46758] = 778753 +mem[6688] = 176052 +mask = 1101X1011110000XXXX100X000100010001X +mem[16129] = 15847806 +mem[56016] = 66002919 +mask = 1000110010111111XX1X0010101X1X0X0110 +mem[54135] = 10002 +mem[1555] = 16539906 +mem[10358] = 3453 +mask = 1000110010X11X1101111X100010101000X1 +mem[11157] = 279881 +mem[53713] = 9651034 +mem[36785] = 310702 +mem[34588] = 5487 +mem[12063] = 14550145 +mem[23545] = 4041181 +mem[51935] = 745 +mask = 100001XX11011100X0111101101X01000X0X +mem[8098] = 368361606 +mem[34147] = 2461575 +mem[59550] = 200895 +mem[11123] = 3128 +mem[47604] = 40815968 +mask = 1100X1111X1X11X1011X00001X1110X0010X +mem[52561] = 78059370 +mem[433] = 1907 +mem[35230] = 3585 +mem[12964] = 1879 +mask = 000X01111101X011X0111011011000X1001X +mem[35870] = 75432030 +mem[28796] = 5745 +mem[53430] = 17634037 +mem[62177] = 592 +mask = 1X0001X1X1XX11X001X1X00111X011100010 +mem[40863] = 65853640 +mem[20522] = 209364300 +mask = 1X000X0011XX1110XX110X00110X10101011 +mem[2158] = 24116032 +mem[22745] = 1609694 +mem[26857] = 3024935 +mem[30768] = 1210739 +mem[59961] = 4345089 +mask = 1001110XX111110X0011010X01X100101XX1 +mem[1555] = 39088167 +mem[11559] = 1142755 +mem[15057] = 1645973 +mem[36549] = 7583615 +mem[44440] = 969 +mem[50670] = 5038261 +mask = 110010011110010100X10X0XX110X0100001 +mem[35244] = 16194790 +mem[58608] = 62816 +mem[27803] = 13303703 +mem[9172] = 1355842 +mem[26644] = 1340 +mem[49396] = 1051 +mem[12058] = 27414753 +mask = 10XX1100111111100111000010XX00100010 +mem[35746] = 6513 +mem[2226] = 1202233 +mem[50790] = 54270 +mem[8778] = 199450327 +mask = 000001XX1111X011X1X101010X1X101X010X +mem[31992] = 8657 +mem[646] = 45280 +mem[57264] = 585 +mask = 1000110000X0101XX11100110010X0000101 +mem[6912] = 78358309 +mem[43538] = 229 +mask = 101X00110X111111X1X0101X1100X1X01X0X +mem[30357] = 438097061 +mem[16494] = 52142984 +mem[7423] = 171318353 +mem[4516] = 1114353 +mem[37939] = 3836 -- cgit v1.2.3-70-g09d2