Added day 5 solution (bad)
This commit is contained in:
parent
e698c6b5c3
commit
6f71ac93cb
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@ -0,0 +1,243 @@
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seeds: 1514493331 295250933 3793791524 105394212 828589016 654882197 658370118 49359719 4055197159 59237418 314462259 268880047 2249227634 74967914 2370414906 38444198 3291001718 85800943 2102534948 5923540
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seed-to-soil map:
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3352941879 1247490906 129850502
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1738919961 2189748071 56658550
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1795578511 292133467 518088747
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1519757661 1666834550 130335907
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1650093568 133993362 88826393
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2813914030 2262539545 40894545
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2698412916 2661705133 115501114
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2854808575 810222214 437268692
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410530961 1545057218 121777332
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0 242661076 10731898
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532308293 2303434090 61476099
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3292077267 1797170457 2282798
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2313667258 0 133993362
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2447660620 2410952837 250752296
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3294360065 253392974 38740493
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10731898 1377341408 167715810
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1457582089 2364910189 46042648
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593784392 3009289500 824592362
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3333100558 222819755 19841321
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1418376754 1799453255 39205335
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1503624737 2246406621 16132924
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178447708 2777206247 232083253
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3482792381 1838658590 351089481
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soil-to-fertilizer map:
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3513795976 4258851234 36116062
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3393453635 4148223693 110627541
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3504081176 3494735450 6350258
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2671742993 3596285367 235915393
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991290653 256764866 25867175
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2907658386 3330719253 68855819
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3336496635 4091266693 56957000
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3161141476 2536943456 80523019
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1961696534 304660310 29551079
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812996514 1560772632 178294139
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1562163347 2321959023 78904062
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31289107 1039870587 339682886
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1520029818 1928417376 42133529
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3510431434 3832200760 3364542
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3549912038 3272523584 58195669
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0 149071717 31289107
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3608107707 3501085708 5732766
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503523937 1739066771 189350605
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3071674583 3506818474 89466893
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3241664495 3996434553 94832140
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1708133363 454333361 253563171
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3813493721 3097084118 175439466
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1991247613 1970550905 351408118
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3613840473 2897430870 199653248
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2536943456 2762631333 134799537
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1641067409 244319429 12445437
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3994753216 3913095788 83338765
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2976514205 3399575072 95160378
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1354883134 0 143118415
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1349131883 2400863085 5751251
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1498001549 282632041 22028269
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2342655731 180360824 63958605
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370971993 1379553473 126598642
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4149802438 2617466475 145164858
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1017157828 707896532 331974055
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692874542 334211389 120121972
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497570635 143118415 5953302
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3988933187 3907275759 5820029
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4078091981 3835565302 71710457
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1653512846 1506152115 54620517
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fertilizer-to-water map:
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3053686523 2028998994 1241280773
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1492748555 1562401968 269616514
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554432178 1000324407 562077561
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2944878746 3270279767 108807777
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2501520804 3379087544 52288887
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1762365069 20686928 69653413
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2028998994 3431376431 472521810
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1431309984 814973200 3653900
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409832614 0 20686928
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430519542 818627100 123912636
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1116509739 500172955 314800245
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2553809691 3903898241 391069055
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0 90340341 409832614
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1434963884 942539736 57784671
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water-to-light map:
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2774754469 1598606098 15160294
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3832622498 1469118874 129487224
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4125818569 3997047227 169148727
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1108418694 1130695768 196125912
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637654660 517892123 26551592
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2519230072 3399515763 135968347
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2751000257 3126996880 23754212
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861800165 884077239 88532605
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1469118874 2566660966 63929427
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2789914763 3150751092 63425583
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2853340346 2561960449 4700517
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1692681911 3397592997 1922766
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2858040863 1773257241 287341147
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2655198419 2851614649 15098309
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950332770 972609844 158085924
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591049922 471287385 46604738
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3482333989 3849276196 108901632
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1694604677 1613766392 159490849
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3591235621 3958177828 38869399
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3630105020 4166195954 128771342
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3205039781 3535484110 277294208
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2706794606 2060598388 44205651
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386607659 544443715 110595292
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3962109722 2540862463 21097986
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697311924 0 92263281
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558450415 404456802 11447837
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2409200012 3214176675 110030060
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569898252 862925569 21151670
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1354525884 415904639 55382746
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789575205 790700609 72224960
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3832262624 2690248164 359874
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163757080 181606223 222850579
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1533048301 2967363270 159633610
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497202951 784452458 6248151
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2670296728 3812778318 36497878
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3145382010 2630590393 59657771
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1854095526 2104804039 436058424
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0 655039007 74414138
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2390804262 2690608038 18395750
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1304544606 1326821680 49981278
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3758876362 3324206735 73386262
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664206252 1376802958 33105672
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74414138 92263281 89342942
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3983207708 2709003788 142610861
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503451102 729453145 54999313
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2290153950 2866712958 100650312
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light-to-temperature map:
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2054128675 422374783 216418447
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3729049939 3132111492 565917357
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524183620 1261361039 34450583
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723901655 638793230 74616934
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304496246 795175951 115896188
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1128506994 1008723417 50927515
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958650763 2074746732 3056214
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0 1224918384 36442655
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558634203 1059650932 165267452
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2052385426 713410164 1743249
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833053864 1953862956 120883776
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36442655 715153413 80022538
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1455705971 1506174459 386316618
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1842022589 1295811622 210362837
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2270547122 2077802946 24477429
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116465193 2102280375 188031053
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1179434509 945607414 63116003
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798518589 911072139 34535275
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3373647615 3893335786 195498774
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3696979816 3698028849 32070123
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1242550512 1892491077 43410067
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3051130577 2566857633 322517038
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3002478931 3844684140 48651646
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2311039190 3730098972 114585168
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2425624358 2311039190 187630064
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2819387158 2889374671 183091773
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1285960579 103791186 85466201
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1371426780 338095592 84279191
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1110545182 1935901144 17961812
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953937640 2290311428 4713123
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420392434 0 103791186
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961706977 189257387 148838205
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3637334768 3072466444 59645048
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3569146389 2498669254 68188379
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2613254422 4088834560 206132736
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temperature-to-humidity map:
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2032423062 2486277941 26281270
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333062067 2316624216 6051173
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1716048249 1385455997 91409968
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460397469 2512559211 69041956
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25538975 668468772 15388105
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2090913379 324344034 71221218
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2804805674 3018690414 130533369
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529439425 908821722 476634275
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1106765273 448560048 219908724
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2162134597 1476865965 445565302
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0 395565252 25538975
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4004204691 4019550481 43244121
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2058704332 0 32209047
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1516375281 2116951248 199672968
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3888833667 2764269134 115371024
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40927080 32209047 292134987
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1490276549 2581601167 26098732
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1360818538 2322675389 129458011
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1006073700 2043715496 73235752
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1079309452 421104227 27455821
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1807458217 683856877 224964845
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339113240 1922431267 121284229
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4155917040 2879640158 139050256
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2764269134 4171262830 40536540
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4047448812 4062794602 108468228
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2935339043 3149223783 870326698
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1326673997 2452133400 34144541
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3805665741 4211799370 83167926
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humidity-to-location map:
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3928575650 3147563455 98804874
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2357899446 2418187254 26586982
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449562184 2261875136 59054833
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308294839 60287808 141267345
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1872062279 1591999301 10857495
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1227084719 574109504 259895254
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1980177059 1765508840 13399403
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1162615704 1941046629 64469015
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2384486428 2654234915 114059261
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702311863 1515542756 40659242
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1993576462 2005515644 256359492
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3047301127 3246368329 27789688
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650396000 1713592977 51915863
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3701335066 3862068622 181049310
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1122863338 1673840611 39752366
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3075090815 4174917460 120049836
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3882384376 2778717800 46191274
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1626219043 201555153 245843236
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4027380524 3325898523 267586772
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3417979817 4043117932 13866284
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3281454033 2925002624 18592540
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110359150 1556201998 35797303
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2558833497 2444774236 209460679
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508617017 834004758 141778983
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1574315753 975783741 51903290
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2249935954 1027687031 107963492
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0 463750354 110359150
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2778717800 3593485295 268583327
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3195140651 2824909074 86313382
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3445626269 2943595164 203968291
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3324037823 4080975466 93941994
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742971105 1135650523 379892233
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146156453 1778908243 39038597
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3300046573 4056984216 23991250
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1503331938 1602856796 70983815
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185195050 1817946840 123099789
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3649594560 3274158017 21920411
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1486979973 447398389 16351965
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3671514971 3296078428 29820095
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2498545689 0 60287808
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3431846101 2911222456 13780168
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1882919774 2320929969 97257285
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@ -0,0 +1,33 @@
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seeds: 79 14 55 13
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seed-to-soil map:
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50 98 2
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52 50 48
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soil-to-fertilizer map:
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0 15 37
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37 52 2
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39 0 15
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fertilizer-to-water map:
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49 53 8
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0 11 42
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42 0 7
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57 7 4
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water-to-light map:
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88 18 7
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18 25 70
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light-to-temperature map:
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45 77 23
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81 45 19
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68 64 13
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temperature-to-humidity map:
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0 69 1
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1 0 69
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humidity-to-location map:
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60 56 37
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56 93 4
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@ -0,0 +1,159 @@
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import std.file;
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import std.string;
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import std.conv;
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import std.algorithm;
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import std.stdio;
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import std.array;
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import std.format;
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import std.ascii;
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bool rangesOverlap(long startA, long endA, long startB, long endB) {
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return (startA <= endB && startB <= endA) || (startB <= endA && startA <= endB);
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}
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struct Mapping {
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long destinationRangeStart, sourceRangeStart, length;
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long sourceRangeEnd() const {
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return sourceRangeStart + length - 1;
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}
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long destinationRangeEnd() const {
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return destinationRangeStart + length - 1;
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}
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long diff() const {
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return destinationRangeStart - sourceRangeStart;
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}
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bool containsSourceValue(long value) {
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return value >= sourceRangeStart && value <= sourceRangeEnd;
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}
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bool containsDestinationValue(long value) {
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return value >= destinationRangeStart && value <= destinationRangeEnd;
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}
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long map(long value) {
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if (containsSourceValue(value)) return value + diff;
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return value;
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}
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long unmap(long value) {
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if (containsDestinationValue(value)) return value - diff;
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return value;
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}
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bool destinationOverlapsWithOtherSource(Mapping other) {
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return rangesOverlap(destinationRangeStart, destinationRangeEnd, other.sourceRangeStart, other.sourceRangeEnd);
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}
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/// Failed attempt to optimize this solution.
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Mapping[] combine(Mapping second) {
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if (!destinationOverlapsWithOtherSource(second)) return [this, second];
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long overlapStart = destinationRangeStart >= second.sourceRangeStart
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? destinationRangeStart
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: second.sourceRangeStart;
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long overlapEnd = destinationRangeEnd <= second.sourceRangeEnd
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? destinationRangeEnd
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: second.sourceRangeEnd;
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writefln!"Combining mapping %s and %s. Overlap: [%d, %d]"(this, second, overlapStart, overlapEnd);
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Mapping[] combination;
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return combination;
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}
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}
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struct Almanac {
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long[] seeds;
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Mapping[][] mappings;
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}
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Almanac parseAlmanac(string filename) {
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string[] lines = File(filename).byLineCopy().array;
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Almanac a;
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a.seeds = lines[0].split(":")[1].split.map!(to!long).array;
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Mapping[] currentMapping;
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for (int i = 2; i < lines.length; i++) {
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if (lines[i].length == 0 || !isDigit(lines[i][0])) {
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if (currentMapping.length > 0) a.mappings ~= currentMapping;
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currentMapping = [];
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} else {
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Mapping m;
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formattedRead(lines[i], "%d %d %d", m.destinationRangeStart, m.sourceRangeStart, m.length);
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currentMapping ~= m;
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}
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}
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if (currentMapping.length > 0) a.mappings ~= currentMapping;
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return a;
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}
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/// A failed attempt to optimize this!
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Mapping[] combineMappingSets(Mapping[] firstSet, Mapping[] secondSet) {
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Mapping[] result;
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foreach (Mapping first; firstSet) {
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foreach (Mapping second; secondSet) {
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if (first.destinationOverlapsWithOtherSource(second)) {
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}
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}
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}
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return result;
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}
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void part1() {
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Almanac a = parseAlmanac("input.txt");
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long minValue = 1_000_000_000;
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foreach (long seed; a.seeds) {
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long value = seed;
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foreach (Mapping[] mappingSet; a.mappings) {
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bool mapped = false;
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foreach (Mapping mapping; mappingSet) {
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if (mapping.containsSourceValue(value)) {
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value = mapping.map(value);
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mapped = true;
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break;
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}
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}
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}
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minValue = min(minValue, value);
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}
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writeln(minValue);
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}
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void part2() {
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import std.parallelism;
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Almanac a = parseAlmanac("input.txt");
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long[][] seedRanges;
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for (int i = 0; i < a.seeds.length; i+=2) {
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long seedRangeStart = a.seeds[i];
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long seedRangeLength = a.seeds[i+1];
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seedRanges ~= [seedRangeStart, seedRangeLength];
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writefln!"Mapping %d seeds starting from %d."(seedRangeLength, seedRangeStart);
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}
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foreach (long[] seedRange; parallel(seedRanges)) {
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long minValue = 1_000_000_000_000;
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const long seedCount = seedRange[1];
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for (long seed = seedRange[0]; seed < seedRange[0] + seedCount; seed++) {
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long value = seed;
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foreach (Mapping[] mappingSet; a.mappings) {
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bool mapped = false;
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foreach (Mapping mapping; mappingSet) {
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if (mapping.containsSourceValue(value)) {
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value = mapping.map(value);
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mapped = true;
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break;
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}
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}
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}
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minValue = min(minValue, value);
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}
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writefln!"Done searching %d seeds, local min = %d"(seedCount, minValue);
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}
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}
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void main() {
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part1();
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part2();
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}
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