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Day 13

This commit is contained in:
Stefan Forstenlechner 2021-12-13 20:00:29 +01:00
parent 16178b5f04
commit 9bb26930eb
3 changed files with 902 additions and 1 deletions
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2
Day12.cs
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@ -1,4 +1,4 @@
#define Day12 // #define Day12
#if Day12 #if Day12
using System.Collections.Immutable; using System.Collections.Immutable;
using AoC2021; using AoC2021;

52
Day13.cs Normal file
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#define Day13
using System.Text.RegularExpressions;
using System.Threading.Channels;
#if Day13
var text = File.ReadAllText("day13/input").Split("\n\n");
var points = text[0].Split("\n").Select(l => l.Split(","))
.Select(p => new Point(int.Parse(p[0]), int.Parse(p[1]))).ToHashSet();
var reg = new Regex(@"fold along (?<c>x|y)=(?<p>\d+)");
var folds = reg.Matches(text[1]).Select(m => new Fold(m.Groups["c"].Value[0], int.Parse(m.Groups["p"].Value))).ToList();
foreach (var curFold in folds) {
HashSet<Point> next = new HashSet<Point>();
if (curFold.c == 'x') {
foreach(var p in points) {
if (p.x < curFold.p) {
next.Add(p);
} else if (p.x > curFold.p) {
next.Add(new Point(curFold.p - (p.x - curFold.p), p.y));
}
}
} else {
foreach(var p in points) {
if (p.y < curFold.p) {
next.Add(p);
} else if (p.y > curFold.p){
next.Add(new Point(p.x, curFold.p - (p.y - curFold.p)));
}
}
}
points = next;
Console.WriteLine(points.Count);
}
var maxX = points.Max(p => p.x);
var maxY = points.Max(p => p.y);
for (int y = 0; y <= maxY; y++) {
for (int x = 0; x <= maxX; x++) {
if (points.Contains(new Point(x, y))) {
Console.Write("#");
} else {
Console.Write(".");
}
}
Console.WriteLine();
}
record Point(int x, int y);
record Fold(char c, int p);
#endif

849
day13/input Normal file
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@ -0,0 +1,849 @@
745,436
810,236
487,101
938,527
972,747
63,284
979,179
1069,204
170,318
863,166
214,68
370,207
567,544
930,452
1220,396
666,294
78,115
20,353
769,313
992,367
1263,228
965,466
311,851
706,280
1176,309
141,101
972,539
830,638
726,208
388,63
43,614
1153,263
920,528
567,722
693,464
634,211
301,49
152,491
967,603
377,873
1039,648
400,828
1176,217
425,851
730,688
940,511
1208,0
793,71
520,25
1208,3
17,60
1166,791
480,630
867,616
194,113
574,1
1054,880
296,297
763,353
945,16
284,831
487,886
808,480
1149,303
689,547
591,162
649,711
755,386
986,502
502,491
937,287
692,625
1208,782
1302,591
1014,821
949,32
487,738
1044,528
1076,739
75,296
768,68
621,155
498,682
472,752
763,22
1141,682
808,801
1202,124
910,380
847,675
448,586
641,361
738,845
959,739
502,638
555,73
686,302
457,155
70,808
433,380
487,801
549,352
473,540
1261,469
599,723
725,241
1051,249
932,504
1211,546
1158,86
1064,395
604,280
520,229
765,768
348,254
134,25
107,353
266,528
370,511
134,309
666,406
708,319
232,490
1247,120
561,429
185,101
666,854
1169,549
728,66
910,199
33,9
1078,490
1190,679
676,477
113,581
157,39
919,344
1241,205
1195,816
929,891
701,103
545,768
890,43
715,381
493,143
597,380
400,179
249,173
405,249
815,617
10,40
1141,436
731,856
1265,214
1293,834
82,843
1143,290
552,560
348,640
77,764
837,680
624,816
1268,879
42,15
853,379
624,526
907,380
753,491
698,84
823,456
244,173
174,544
1110,863
725,689
874,283
343,67
443,616
564,396
184,140
946,255
463,675
343,379
743,172
967,666
134,421
102,891
1014,750
102,560
361,32
70,584
812,212
823,101
314,740
634,0
1213,653
1203,353
221,514
960,31
821,303
1144,840
351,403
75,676
864,511
144,501
1012,47
169,682
421,653
836,513
364,255
1158,310
634,865
937,803
462,553
1181,500
1125,59
156,458
182,142
338,600
380,697
60,446
432,423
438,795
502,414
209,180
1158,491
937,539
333,280
52,217
720,168
664,266
602,319
403,655
85,645
82,624
383,689
591,60
197,394
972,600
166,840
398,14
674,439
440,276
676,211
85,249
972,147
933,693
1208,508
184,411
184,235
222,350
1197,581
249,821
766,625
147,299
574,787
112,378
713,514
1186,383
1036,697
344,829
298,735
202,263
567,161
944,207
1181,394
1061,49
1290,0
959,179
1235,604
785,500
1029,651
617,430
1089,94
82,185
837,802
129,394
910,715
28,16
821,591
1272,700
403,768
33,885
661,880
8,591
1007,851
179,75
939,474
782,191
1069,297
18,455
45,8
413,697
636,295
845,631
169,884
166,54
377,693
840,235
1110,479
892,7
758,448
1166,841
316,40
1283,572
1029,103
338,32
607,666
1083,709
370,84
815,765
1014,597
358,592
930,890
500,861
482,861
930,157
52,289
621,9
930,442
731,655
283,26
1047,162
810,460
636,439
1093,574
487,268
671,68
513,793
636,455
664,714
771,392
1258,547
716,29
377,201
447,166
897,242
1141,548
348,701
386,583
457,500
316,862
954,831
45,662
1153,39
1007,155
134,869
736,787
815,325
555,508
882,814
1020,639
659,627
912,238
1307,828
611,250
167,626
227,709
1166,53
994,539
552,0
972,152
1053,840
1300,256
13,864
1220,483
1011,474
1071,228
996,154
458,565
298,217
390,80
619,14
758,451
92,179
674,743
249,197
162,345
28,607
324,392
673,60
940,810
1208,675
102,894
239,228
959,403
617,464
1076,424
184,754
800,375
1146,549
924,535
464,885
340,350
711,653
970,359
485,234
1233,130
27,124
170,682
1258,289
1044,814
1044,227
1092,303
190,280
1273,464
77,397
1125,345
296,750
1232,616
552,891
167,886
159,617
152,819
541,581
475,371
1268,810
555,386
433,94
1000,381
364,703
1169,101
1126,411
487,156
1302,303
509,92
72,491
500,33
1026,383
500,460
1225,249
1126,82
152,808
1193,455
387,605
1141,458
1110,703
708,795
1198,449
418,483
1193,439
415,666
274,157
371,474
152,577
425,884
1310,445
1058,206
1257,3
907,126
604,154
344,65
1293,60
905,73
1138,787
807,756
462,116
45,875
1053,278
1047,322
564,498
27,26
1202,367
621,347
211,144
63,568
152,862
684,719
172,107
701,438
557,491
441,693
144,53
502,577
800,841
351,155
1218,246
33,459
775,728
572,192
1083,386
410,621
626,607
817,751
99,348
453,430
1021,430
137,151
1208,334
214,618
590,726
281,91
745,458
933,245
400,199
885,851
266,667
1119,868
621,179
800,519
157,843
1103,187
706,449
862,308
298,847
157,166
355,891
1136,190
817,378
552,334
480,544
728,439
725,653
602,249
75,710
1233,707
1014,373
1154,458
38,700
1277,885
940,207
637,732
33,99
276,1
701,427
421,429
626,399
671,826
330,616
58,535
1277,435
913,54
567,274
316,355
933,873
433,800
1232,115
1255,694
689,459
234,424
1143,886
952,73
728,828
169,548
354,191
520,869
1110,31
1297,30
808,808
1197,313
661,711
823,178
38,418
42,810
1207,448
356,735
190,614
1225,690
320,94
853,842
1029,551
1053,502
569,249
924,583
241,652
552,446
227,185
1226,115
576,616
910,35
373,539
144,151
470,235
264,366
1292,599
974,815
711,723
356,561
1136,317
413,380
298,719
1220,411
82,30
960,863
16,737
1158,819
308,599
408,499
266,80
972,862
856,703
1077,689
487,793
940,84
1268,532
282,434
626,175
454,31
1240,808
408,173
500,658
889,653
457,52
837,92
214,826
1245,794
271,648
649,880
432,471
1136,577
1141,212
276,292
77,845
1233,645
102,782
905,821
436,283
17,516
922,528
485,794
954,677
579,655
1113,394
1235,676
686,32
1074,859
894,632
261,794
221,800
480,43
70,310
393,100
1174,241
1282,430
50,602
1120,457
52,677
853,291
441,201
946,348
659,66
431,672
65,100
790,105
157,631
82,621
311,155
1131,452
930,575
823,793
790,869
923,448
817,826
1044,334
738,718
1131,75
144,519
761,542
474,513
785,739
316,712
405,645
828,861
425,43
1146,345
277,21
689,715
555,521
959,155
1258,575
638,65
1282,464
612,810
800,53
30,592
1268,756
1243,304
830,256
848,553
403,380
1125,549
750,404
1153,843
126,191
541,313
929,443
365,878
314,154
1268,84
358,816
185,387
159,317
536,191
331,179
26,863
1253,604
1069,373
907,768
144,743
157,504
572,718
1077,465
1002,599
743,722
16,605
1044,831
403,318
774,703
330,392
191,26
495,765
955,698
547,200
1235,744
1283,26
397,17
157,51
579,38
1141,234
27,572
1077,336
992,527
293,480
410,115
970,535
1054,747
1010,54
299,420
913,726
731,598
589,346
738,624
536,703
649,14
296,149
684,287
1165,540
701,456
694,383
13,30
1099,554
962,701
321,396
962,448
890,760
1235,150
793,184
495,129
708,249
967,827
69,205
755,508
103,670
708,347
92,627
420,67
895,184
1195,78
885,205
293,683
639,826
1154,766
1238,66
572,633
348,448
1073,884
681,49
544,625
1258,347
1076,515
793,408
980,392
1039,877
962,640
436,31
67,304
878,423
823,353
1232,168
311,491
170,212
463,787
874,303
1233,389
1238,43
962,483
889,689
769,581
996,740
621,885
897,697
922,35
1208,219
582,491
1272,879
18,159
616,252
1272,476
689,179
949,190
848,789
380,197
1186,511
487,353
1277,99
616,511
311,403
591,326
129,603
267,448
53,667
1156,861
274,737
708,218
1053,616
611,614
1034,1
853,52
1029,91
197,515
211,340
75,666
281,551
1004,894
923,446
835,554
351,739
1143,626
1037,3
105,352
552,448
482,637
1277,347
1131,541
85,690
634,894
618,625
fold along x=655
fold along y=447
fold along x=327
fold along y=223
fold along x=163
fold along y=111
fold along x=81
fold along y=55
fold along x=40
fold along y=27
fold along y=13
fold along y=6