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Day 5: Add C solution

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Mia Herkt 2021-12-05 09:05:55 +01:00
parent 402bc1862d
commit 5fb0db17fb
Signed by: mia
GPG key ID: 72E154B8622EC191
3 changed files with 577 additions and 0 deletions
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500
05/input.txt Normal file
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@ -0,0 +1,500 @@
452,244 -> 452,303
958,109 -> 958,639
809,31 -> 778,31
927,139 -> 917,139
56,298 -> 273,298
959,53 -> 959,739
80,255 -> 434,255
750,500 -> 73,500
528,920 -> 428,820
455,552 -> 289,718
800,363 -> 800,25
688,745 -> 688,696
364,41 -> 364,351
693,642 -> 693,67
564,143 -> 755,143
622,682 -> 622,869
311,515 -> 311,120
210,255 -> 210,363
66,550 -> 540,550
243,485 -> 381,623
321,712 -> 680,712
549,501 -> 70,22
357,893 -> 823,893
797,882 -> 536,621
389,724 -> 389,329
859,75 -> 859,591
195,618 -> 161,618
508,668 -> 974,202
543,871 -> 889,525
99,659 -> 371,387
602,553 -> 547,553
98,930 -> 98,683
741,522 -> 895,522
143,636 -> 683,636
56,751 -> 56,555
696,117 -> 784,117
625,827 -> 277,827
908,633 -> 213,633
482,290 -> 256,290
717,566 -> 717,923
258,34 -> 728,34
862,54 -> 862,869
57,983 -> 987,53
749,712 -> 715,678
342,291 -> 147,291
48,308 -> 48,600
44,749 -> 823,749
671,533 -> 944,533
848,804 -> 315,804
960,310 -> 980,310
730,426 -> 730,330
85,633 -> 690,28
432,791 -> 692,531
217,128 -> 217,763
205,275 -> 781,851
207,329 -> 201,329
338,724 -> 338,783
434,89 -> 501,89
812,298 -> 812,480
299,190 -> 752,190
441,301 -> 441,872
643,913 -> 643,21
518,204 -> 518,442
730,601 -> 930,601
352,268 -> 766,268
444,55 -> 444,372
240,914 -> 656,498
507,858 -> 507,581
246,805 -> 805,805
955,960 -> 381,386
828,128 -> 818,128
218,775 -> 557,436
896,529 -> 173,529
523,338 -> 581,338
972,203 -> 770,203
515,635 -> 728,848
852,380 -> 852,469
963,829 -> 688,829
320,161 -> 234,161
517,531 -> 919,933
971,75 -> 578,75
244,666 -> 244,308
640,311 -> 164,787
373,311 -> 373,611
50,784 -> 653,181
770,93 -> 96,767
30,19 -> 887,876
964,860 -> 447,343
436,645 -> 436,813
10,11 -> 982,983
907,638 -> 907,979
453,864 -> 453,246
578,132 -> 757,132
55,456 -> 548,456
127,626 -> 493,626
816,14 -> 748,14
938,873 -> 938,478
315,374 -> 902,961
137,386 -> 137,478
121,954 -> 702,373
92,874 -> 714,252
521,660 -> 34,660
677,401 -> 531,401
55,278 -> 331,278
400,263 -> 426,237
236,974 -> 236,545
579,30 -> 579,198
886,257 -> 320,823
53,67 -> 922,936
374,773 -> 470,773
241,115 -> 241,61
206,252 -> 519,565
388,617 -> 388,778
423,315 -> 978,315
616,759 -> 174,317
770,511 -> 770,487
118,258 -> 309,258
320,908 -> 320,433
71,358 -> 50,337
37,461 -> 175,323
374,758 -> 374,96
268,139 -> 268,785
72,484 -> 364,484
937,286 -> 574,286
554,602 -> 554,475
677,863 -> 245,863
975,33 -> 54,954
557,960 -> 560,957
989,892 -> 175,78
447,47 -> 830,430
407,718 -> 634,945
418,304 -> 418,103
890,278 -> 890,915
449,619 -> 243,825
798,661 -> 137,661
796,251 -> 67,980
122,88 -> 122,518
505,407 -> 695,217
447,961 -> 447,524
608,708 -> 390,708
110,636 -> 878,636
376,517 -> 376,409
400,213 -> 767,213
369,220 -> 369,203
141,934 -> 921,154
808,243 -> 808,983
529,923 -> 529,438
399,324 -> 350,324
632,83 -> 276,83
254,632 -> 812,74
981,594 -> 453,594
30,893 -> 472,893
22,355 -> 614,355
519,732 -> 519,911
392,425 -> 392,710
987,953 -> 987,82
519,108 -> 370,108
52,897 -> 52,449
17,83 -> 913,979
612,305 -> 118,799
225,365 -> 225,639
878,928 -> 45,95
238,279 -> 908,279
352,27 -> 352,572
72,11 -> 347,286
332,195 -> 332,189
273,726 -> 204,726
401,817 -> 498,817
118,170 -> 118,675
924,868 -> 528,472
721,948 -> 886,948
735,379 -> 331,379
256,298 -> 256,187
600,886 -> 314,886
937,275 -> 937,385
840,777 -> 92,29
844,96 -> 844,691
833,597 -> 833,762
475,138 -> 475,207
32,984 -> 675,984
101,528 -> 101,497
884,399 -> 302,981
178,124 -> 670,616
363,84 -> 527,84
744,784 -> 336,784
588,963 -> 588,543
298,525 -> 626,525
610,496 -> 265,496
648,294 -> 460,106
859,646 -> 859,867
469,48 -> 987,566
273,689 -> 103,859
556,745 -> 440,745
44,923 -> 941,26
569,777 -> 781,565
791,408 -> 276,923
289,185 -> 289,608
866,783 -> 760,783
302,153 -> 420,35
45,545 -> 479,979
309,54 -> 850,54
36,48 -> 973,985
698,671 -> 129,102
778,339 -> 587,339
114,566 -> 114,621
747,450 -> 583,286
558,698 -> 558,912
60,43 -> 987,970
770,243 -> 770,490
58,811 -> 58,131
839,364 -> 839,614
833,633 -> 833,208
685,441 -> 600,526
919,894 -> 769,894
478,799 -> 601,922
957,957 -> 237,957
472,169 -> 472,96
269,185 -> 269,117
582,187 -> 582,460
243,506 -> 722,506
702,191 -> 125,768
542,63 -> 542,398
379,222 -> 920,763
930,658 -> 930,724
524,33 -> 524,739
987,949 -> 50,12
976,71 -> 852,71
46,59 -> 921,934
906,526 -> 906,623
621,455 -> 621,590
954,55 -> 954,499
740,52 -> 740,448
185,959 -> 937,207
563,349 -> 261,651
852,938 -> 114,938
972,22 -> 16,978
249,142 -> 199,142
282,469 -> 282,831
667,686 -> 685,686
901,95 -> 901,578
186,903 -> 336,903
662,248 -> 99,811
485,248 -> 833,248
12,154 -> 734,154
87,270 -> 760,270
926,191 -> 799,191
796,793 -> 451,448
443,292 -> 625,292
944,62 -> 944,859
988,489 -> 374,489
693,279 -> 693,55
893,617 -> 893,247
168,905 -> 910,905
850,429 -> 773,429
943,13 -> 364,13
409,880 -> 409,806
620,646 -> 567,699
194,949 -> 194,660
775,682 -> 775,456
741,161 -> 581,161
889,91 -> 42,938
725,495 -> 273,43
211,22 -> 897,22
314,604 -> 562,604
299,193 -> 914,193
240,388 -> 612,16
367,752 -> 367,114
330,34 -> 931,34
809,909 -> 809,757
912,140 -> 224,140
545,804 -> 503,804
848,758 -> 848,638
917,226 -> 538,226
43,34 -> 43,97
47,54 -> 47,435
32,52 -> 843,863
200,361 -> 398,163
466,388 -> 705,388
928,127 -> 104,951
869,940 -> 869,787
697,563 -> 167,563
754,828 -> 754,141
661,100 -> 968,100
582,44 -> 582,182
876,550 -> 876,268
737,240 -> 27,950
664,730 -> 633,730
244,805 -> 228,805
226,605 -> 211,605
911,524 -> 548,524
814,256 -> 889,181
432,944 -> 432,235
445,25 -> 445,499
233,619 -> 91,477
151,248 -> 880,977
267,149 -> 317,149
968,346 -> 968,371
665,617 -> 665,770
518,625 -> 518,579
451,458 -> 628,635
764,442 -> 255,442
240,363 -> 680,803
443,153 -> 863,153
674,880 -> 973,581
876,236 -> 876,817
569,335 -> 569,907
74,400 -> 74,679
495,804 -> 827,472
182,76 -> 832,726
376,370 -> 986,370
986,233 -> 541,233
386,379 -> 386,837
624,637 -> 454,637
844,866 -> 179,201
392,89 -> 627,89
559,326 -> 525,326
681,188 -> 418,188
796,386 -> 796,637
35,72 -> 952,989
735,873 -> 407,873
756,238 -> 328,238
872,284 -> 394,284
157,873 -> 243,873
621,657 -> 913,657
13,42 -> 13,598
831,725 -> 831,270
944,51 -> 87,908
409,820 -> 913,316
250,323 -> 622,323
435,397 -> 435,409
691,198 -> 691,952
302,352 -> 872,352
370,790 -> 362,790
114,74 -> 926,74
561,273 -> 561,169
240,658 -> 240,584
677,357 -> 557,477
480,796 -> 544,732
981,568 -> 319,568
63,928 -> 957,34
715,145 -> 81,779
918,554 -> 292,554
943,550 -> 943,23
425,477 -> 277,329
428,718 -> 428,612
213,647 -> 244,616
549,610 -> 549,39
433,330 -> 433,922
903,921 -> 148,166
357,706 -> 913,150
990,254 -> 990,368
937,47 -> 937,34
868,86 -> 260,694
919,905 -> 140,126
256,918 -> 980,194
880,346 -> 331,895
706,392 -> 706,328
283,986 -> 758,511
967,106 -> 123,106
486,92 -> 486,47
298,338 -> 888,928
665,767 -> 987,767
139,898 -> 139,94
257,808 -> 257,388
865,631 -> 865,624
168,913 -> 168,984
848,936 -> 197,285
195,249 -> 764,249
117,900 -> 249,900
813,130 -> 10,933
693,81 -> 693,554
595,448 -> 987,840
293,140 -> 904,751
198,289 -> 234,289
714,671 -> 989,396
161,600 -> 161,465
458,955 -> 807,955
485,124 -> 485,835
352,911 -> 691,911
896,949 -> 103,156
618,171 -> 618,847
563,887 -> 44,887
293,801 -> 293,492
903,714 -> 651,714
959,18 -> 265,712
28,134 -> 851,957
888,374 -> 647,374
184,566 -> 184,411
977,244 -> 926,193
864,189 -> 427,626
687,262 -> 700,275
86,82 -> 891,887
517,779 -> 517,599
850,59 -> 256,653
595,352 -> 595,142
62,191 -> 618,747
56,395 -> 124,463
902,138 -> 418,138
603,131 -> 185,549
446,546 -> 446,397
278,788 -> 916,788
153,19 -> 707,573
580,468 -> 502,390
278,794 -> 447,963
260,495 -> 315,550
648,392 -> 726,392
232,457 -> 633,858
475,697 -> 740,697
526,186 -> 526,588
868,287 -> 868,668
88,57 -> 88,984
539,963 -> 539,859
499,214 -> 963,678
105,16 -> 937,848
566,158 -> 566,26
675,915 -> 675,555
702,123 -> 360,123
37,47 -> 120,130
826,787 -> 79,787
232,33 -> 833,634
455,775 -> 455,919
300,488 -> 300,92
36,84 -> 36,514
700,916 -> 700,391
710,585 -> 710,14
989,938 -> 120,69
437,514 -> 437,277
400,358 -> 400,623
482,908 -> 802,908
869,842 -> 53,26
531,560 -> 180,560
18,312 -> 18,223
541,888 -> 541,438
631,751 -> 631,238
820,208 -> 192,836
976,453 -> 561,38
118,544 -> 318,744
283,818 -> 283,138
876,623 -> 327,623
11,855 -> 283,855
438,460 -> 145,167
788,379 -> 250,379
376,130 -> 890,130
616,747 -> 538,825
906,403 -> 906,306
710,371 -> 710,200
871,917 -> 629,917
751,103 -> 345,103
374,608 -> 641,608
481,902 -> 198,902
512,686 -> 590,764
187,134 -> 949,896
628,58 -> 170,516
54,370 -> 23,401
391,718 -> 523,718
617,637 -> 448,637
108,208 -> 233,208
57,478 -> 633,478
122,693 -> 734,693
980,537 -> 980,639
134,448 -> 134,439
81,812 -> 515,812
483,133 -> 215,133
68,250 -> 68,476
204,101 -> 204,934
525,626 -> 924,227
783,519 -> 373,929
813,166 -> 813,837
12,988 -> 988,12
49,180 -> 46,180
782,585 -> 782,194
798,98 -> 459,437
904,83 -> 333,654
404,417 -> 404,819
289,228 -> 431,86
281,876 -> 964,193
66,15 -> 66,570
134,159 -> 784,809
356,684 -> 442,598
211,624 -> 572,624
19,985 -> 986,18
978,429 -> 978,791
181,955 -> 832,304
566,859 -> 566,281
391,232 -> 535,232
798,848 -> 17,67
530,203 -> 530,932
502,562 -> 287,562
710,499 -> 451,758
886,420 -> 163,420
858,289 -> 632,515
939,441 -> 939,280
293,220 -> 444,220
363,676 -> 159,676
983,24 -> 46,961
725,585 -> 154,14
236,453 -> 467,453
806,395 -> 806,557
149,583 -> 149,200
858,704 -> 858,272

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05/solution_1.c Normal file
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#include <stdio.h>
int main(void) {
FILE *fp = fopen("input.txt", "r");
unsigned char map[1000][1000] = {0};
unsigned x0, x1, y0, y1;
unsigned intersections = 0;
while (fscanf(fp, "%u,%u -> %u,%u", &x0, &y0, &x1, &y1) == 4) {
char inc = 1;
if (x0 == x1) {
if (y0 > y1)
inc = -1;
for (unsigned y = y0; y != y1; y += inc) {
map[x0][y]++;
}
map[x0][y1]++;
} else if (y0 == y1) {
if (x0 > x1)
inc = -1;
for (unsigned x = x0; x != x1; x += inc) {
map[x][y0]++;
}
map[x1][y0]++;
}
}
for (unsigned y = 0; y < 1000; y++) {
for (unsigned x = 0; x < 1000; x++) {
if (map[x][y] > 1)
intersections++;
}
}
printf("Answer: %d\n", intersections);
}

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05/solution_2.c Normal file
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#include <stdio.h>
int main(void) {
FILE *fp = fopen("input.txt", "r");
unsigned char map[1000][1000] = {0};
unsigned x0, x1, y0, y1;
unsigned intersections = 0;
while (fscanf(fp, "%u,%u -> %u,%u", &x0, &y0, &x1, &y1) == 4) {
char incY = y0 < y1 ? 1 : -1;
char incX = x0 < x1 ? 1 : -1;
if (x0 == x1) {
for (unsigned y = y0; y != y1; y += incY) {
map[x0][y]++;
}
map[x0][y1]++;
} else if (y0 == y1) {
for (unsigned x = x0; x != x1; x += incX) {
map[x][y0]++;
}
map[x1][y0]++;
} else {
unsigned x = x0, y = y0;
while (x != x1 && y != y1) {
map[x][y]++;
x += incX;
y += incY;
}
map[x][y]++;
}
}
for (unsigned y = 0; y < 1000; y++) {
for (unsigned x = 0; x < 1000; x++) {
if (map[x][y] > 1)
intersections++;
}
}
printf("Answer: %d\n", intersections);
}