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Day 13

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Sebastian Seedorf
2021-12-13 09:25:50 +01:00
parent e953a32235
commit 8f9365821f
3 changed files with 906 additions and 0 deletions
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866
day13/input.txt Normal file
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17,52
740,52
559,424
820,415
880,718
867,814
1136,658
420,170
492,530
300,686
1201,233
1161,116
247,584
43,754
231,857
980,388
80,173
560,478
1148,4
1121,187
492,219
649,492
599,788
624,456
455,584
52,277
903,310
177,598
654,891
277,623
180,80
68,702
751,555
55,788
175,16
288,236
17,842
1215,122
1309,131
475,639
1148,113
475,670
140,763
251,767
261,191
177,84
1068,724
179,639
671,444
569,148
1051,297
1076,495
763,452
1,152
475,224
80,423
837,128
1033,399
649,402
234,443
1309,579
599,206
1245,703
0,787
1258,277
283,306
1120,877
611,140
703,386
377,175
825,439
32,651
653,47
1158,886
1300,348
243,770
913,206
1146,479
508,94
242,593
289,674
54,350
693,668
527,448
569,779
833,477
898,593
321,308
248,40
1295,544
1093,9
529,82
559,409
919,812
653,656
343,884
83,124
793,610
385,625
904,264
1145,686
229,32
326,107
425,862
1131,389
1143,487
1,579
1009,620
900,222
174,658
167,39
653,686
383,35
493,735
190,465
1255,572
334,371
652,612
1265,242
95,409
1101,507
363,611
1010,765
939,306
1022,236
189,129
146,94
575,91
726,61
837,724
310,128
1255,788
666,472
823,855
1309,847
1007,162
1033,271
480,207
371,812
1051,81
979,779
654,79
119,894
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1068,469
211,890
199,184
831,878
430,718
902,688
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412,301
865,535
639,444
887,788
616,672
43,140
617,2
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915,873
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802,352
641,779
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248,264
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62,686
661,315
1125,609
1295,131
1233,689
723,365
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1121,765
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907,799
1066,240
545,233
395,201
751,872
1062,630
985,231
5,315
735,91
70,833
899,91
584,514
492,675
701,242
559,609
127,486
1051,675
1148,245
1009,274
987,429
1287,605
134,505
830,616
1156,819
411,500
950,532
269,269
1285,123
408,672
180,814
672,318
498,187
321,627
1293,842
1255,635
711,788
162,677
1193,835
835,224
480,616
782,628
671,59
830,680
691,611
55,572
1300,239
976,371
360,532
656,891
80,672
885,837
117,390
721,191
62,208
741,148
343,668
549,872
1183,446
95,563
1076,451
905,205
574,49
385,717
162,331
1226,817
477,296
252,371
492,306
35,611
758,400
273,661
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989,332
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239,704
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783,408
381,233
321,332
751,424
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390,432
43,252
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1019,310
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890,219
164,722
70,61
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333,267
242,469
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1163,672
219,348
830,687
411,842
545,728
325,628
1101,836
386,82
234,399
325,686
480,724
321,315
544,837
1247,530
169,738
1309,42
885,57
989,315
585,318
1146,172
925,424
933,271
1031,732
1079,509
149,88
771,277
1136,687
1,47
395,469
329,238
1230,672
741,779
321,267
1079,253
902,672
795,177
1300,546
261,390
165,208
899,124
1101,354
169,215
693,226
475,672
0,891
482,75
661,220
345,766
385,126
208,766
549,501
358,456
495,71
957,317
425,57
283,222
1227,646
1066,761
939,812
1103,364
793,60
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967,884
617,668
479,878
445,59
885,725
1007,610
1183,51
373,876
885,505
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52,366
1265,283
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301,620
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724,590
1158,8
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705,175
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739,131
701,838
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890,675
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372,654
1141,604
574,173
208,206
656,79
356,505
693,2
972,395
639,450
773,835
1041,269
433,798
1275,611
375,485
907,319
447,364
825,674
831,430
1062,854
395,597
686,456
887,485
682,462
877,52
237,677
282,464
0,61
1183,856
915,675
830,170
1273,892
82,0
691,688
537,838
505,88
855,584
288,894
248,33
435,763
363,38
689,226
115,452
403,799
291,67
493,159
1027,306
190,17
161,511
492,364
435,131
1041,177
996,304
902,670
863,364
137,362
1156,371
599,654
17,82
1010,96
907,767
411,124
828,523
354,768
1275,464
701,163
887,253
291,283
343,660
1067,355
189,219
1198,214
661,579
1149,383
616,222
1164,68
517,577
1064,397
1009,129
505,806
1021,450
326,215
217,233
725,318
353,129
1079,385
95,161
669,424
693,674
243,131
823,375
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581,481
949,124
652,58
731,543
420,219
514,635
156,707
473,724
750,674
890,3
371,306
817,686
252,747
1227,763
1195,617
300,14
475,66
658,58
773,282
1049,703
1084,728
377,719
142,232
35,136
508,68
408,240
174,207
649,233
666,348
1223,704
1016,810
1148,863
935,485
823,410
157,138
673,52
326,679
482,523
325,215
1300,870
189,577
311,355
1230,497
559,733
1141,290
661,851
1077,766
638,318
329,47
410,654
965,530
1156,75
537,835
867,528
1129,766
1017,322
517,274
984,215
485,439
74,75
1007,732
1174,488
611,588
209,354
658,612
701,51
997,351
817,208
855,184
957,129
808,886
433,52
179,389
1215,409
37,892
966,80
828,819
867,890
465,129
885,389
699,140
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954,366
410,581
1215,787
423,485
1164,800
149,116
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403,319
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420,675
935,409
739,842
17,394
269,177
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326,665
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192,757
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609,242
468,635
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310,576
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1305,579
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835,884
338,499
818,675
628,541
656,893
1300,655
32,203
597,717
77,689
865,506
743,586
303,732
221,22
1072,175
877,872
391,840
174,168
30,438
669,779
1297,305
572,654
989,627
1159,878
657,656
395,373
823,36
1089,394
836,80
490,173
570,537
954,528
559,161
691,448
836,542
1309,91
1243,382
977,267
1067,131
641,95
719,54
739,124
935,284
325,490
354,686
989,674
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967,668
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517,620
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547,452
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162,479
83,696
279,732
1260,232
761,501
330,388
321,698
325,355
551,273
1096,774
172,371
443,53
493,208
343,234
1062,40
231,409
793,577
269,470
298,57
845,35
45,724
154,523
602,80
480,278
947,283
924,82
221,394
1277,668
591,54
965,766
259,373
179,255
175,878
966,814
246,497
679,605
50,214
1022,894
1310,563
1067,539
385,768
217,661
509,842
1223,756
1078,30
0,115
656,331
238,175
915,81
231,606
1150,170
1154,187
979,151
587,107
162,890
1243,691
146,542
1146,343
169,604
192,416
1277,124
402,523
95,122
1064,654
740,537
492,667
109,681
750,416
180,542
1243,830
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333,579
323,779
750,220
1258,416
316,395
1267,140
657,152
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251,319
30,456
654,563
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167,858
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127,448
413,107
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93,576
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740,817
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637,842
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1136,726
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1293,82
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83,322
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820,115
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1243,200
354,577
411,91
999,350
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1309,763
219,628
1,91
311,226
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161,208
1081,389
1021,140
149,477
408,423
897,107
514,315
47,60
311,579
956,126
380,864
890,654
233,576
52,478
751,733
1131,406
1275,731
902,240
528,628
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

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day13/part1.py Normal file
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#!/usr/bin/env python3
lines = (x.strip() for x in open("input.txt"))
points = set()
# 1311,895
for line in lines:
if line.startswith("fold along x="):
mark = int(line[13:])
points = set((x if mark > x else 2*mark-x, y) for x, y in points if mark != x)
break
elif line.startswith("fold along y="):
mark = int(line[13:])
points = set((x, y if mark > y else 2*mark-y) for x, y in points if mark != y)
break
elif len(line) > 0:
points.add(tuple(int(num) for num in line.split(",")))
print(len(points))

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day13/part2.py Normal file
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#!/usr/bin/env python3
from functools import reduce
import numpy as np
lines = (x.strip() for x in open("input.txt"))
points = set()
# 1311,895
for line in lines:
if line.startswith("fold along x="):
mark = int(line[13:])
points = set((x if mark > x else 2*mark-x, y) for x, y in points if mark != x)
elif line.startswith("fold along y="):
mark = int(line[13:])
points = set((x, y if mark > y else 2*mark-y) for x, y in points if mark != y)
elif len(line) > 0:
points.add(tuple(int(num) for num in line.split(",")))
max_x, max_y = reduce(lambda p, c: tuple(map(max, zip(p, c))), points)
for line in (''.join('#' if (x, y) in points else ' ' for x in range(max_x+1)) for y in range(max_y+1)):
print(line)