advent2022

commit 6bf87ae41fc0411df5cf2016c74b5fe63efc90c5
parent 67647abfdee54462a6c10a4d61a1840d32f9cc06
Author: bsandro <email@bsandro.tech>
Date:   Wed, 14 Dec 2022 07:47:49 +0000

Day 14 input parsing

Diffstat:
A
day14/input.txt
 | 
144
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
day14/main.go
 | 
158
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
day14/sample.txt
 | 
2
++

3 files changed, 304 insertions(+), 0 deletions(-)
diff --git a/day14/input.txt b/day14/input.txt
@@ -0,0 +1,144 @@
+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+510,167 -> 514,167
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+498,175 -> 498,176 -> 505,176
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+489,79 -> 493,79
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+483,85 -> 487,85
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
+480,82 -> 484,82
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+494,144 -> 494,145 -> 504,145 -> 504,144
+486,54 -> 490,54
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+492,60 -> 496,60
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+497,147 -> 497,148 -> 513,148 -> 513,147
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+474,70 -> 478,70
+466,103 -> 466,104 -> 481,104 -> 481,103
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+471,85 -> 475,85
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+480,70 -> 484,70
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+468,70 -> 472,70
+480,60 -> 484,60
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+477,68 -> 481,68
+483,79 -> 487,79
+495,85 -> 499,85
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
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+474,82 -> 478,82
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+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+495,63 -> 499,63
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+477,79 -> 481,79
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+501,170 -> 505,170
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+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+489,85 -> 493,85
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+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
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+471,68 -> 475,68
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+486,76 -> 490,76
+483,73 -> 487,73
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+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+466,103 -> 466,104 -> 481,104 -> 481,103
+504,167 -> 508,167
+507,170 -> 511,170
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
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+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
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+507,164 -> 511,164
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
+474,66 -> 478,66
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
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+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+486,120 -> 486,122 -> 482,122 -> 482,128 -> 491,128 -> 491,122 -> 490,122 -> 490,120
+489,57 -> 493,57
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+480,76 -> 484,76
+488,36 -> 488,32 -> 488,36 -> 490,36 -> 490,26 -> 490,36 -> 492,36 -> 492,26 -> 492,36 -> 494,36 -> 494,32 -> 494,36
+477,63 -> 481,63
+492,82 -> 496,82
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+513,170 -> 517,170
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+483,57 -> 487,57
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+498,175 -> 498,176 -> 505,176
+486,60 -> 490,60
+497,147 -> 497,148 -> 513,148 -> 513,147
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+486,82 -> 490,82
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+477,85 -> 481,85
+493,23 -> 493,21 -> 493,23 -> 495,23 -> 495,18 -> 495,23 -> 497,23 -> 497,19 -> 497,23 -> 499,23 -> 499,18 -> 499,23 -> 501,23 -> 501,18 -> 501,23 -> 503,23 -> 503,15 -> 503,23 -> 505,23 -> 505,16 -> 505,23
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+483,63 -> 487,63
+513,151 -> 513,155 -> 510,155 -> 510,161 -> 519,161 -> 519,155 -> 515,155 -> 515,151
+466,103 -> 466,104 -> 481,104 -> 481,103
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+463,98 -> 463,97 -> 463,98 -> 465,98 -> 465,94 -> 465,98 -> 467,98 -> 467,94 -> 467,98 -> 469,98 -> 469,88 -> 469,98 -> 471,98 -> 471,90 -> 471,98 -> 473,98 -> 473,97 -> 473,98 -> 475,98 -> 475,95 -> 475,98
+494,144 -> 494,145 -> 504,145 -> 504,144
+493,39 -> 493,43 -> 489,43 -> 489,51 -> 501,51 -> 501,43 -> 496,43 -> 496,39
+490,131 -> 490,134 -> 482,134 -> 482,139 -> 501,139 -> 501,134 -> 495,134 -> 495,131
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
+494,144 -> 494,145 -> 504,145 -> 504,144
+476,117 -> 476,114 -> 476,117 -> 478,117 -> 478,110 -> 478,117 -> 480,117 -> 480,110 -> 480,117 -> 482,117 -> 482,114 -> 482,117 -> 484,117 -> 484,113 -> 484,117 -> 486,117 -> 486,113 -> 486,117
diff --git a/day14/main.go b/day14/main.go
@@ -0,0 +1,158 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type Pos struct {
+	x, y int
+}
+
+type Shape []Pos
+type Shapes []Shape
+
+func (ss Shapes) GetMinX() int {
+	x := -1
+	for _, s := range ss {
+		for _, e := range s {
+			if x == -1 {
+				x = e.x
+			}
+			if e.x < x {
+				x = e.x
+			}
+		}
+	}
+	return x
+}
+func (ss Shapes) GetMaxX() int {
+	x := 0
+	for _, s := range ss {
+		for _, e := range s {
+			if e.x > x {
+				x = e.x
+			}
+		}
+	}
+	return x
+}
+func (ss Shapes) GetMaxY() int {
+	y := 0
+	for _, s := range ss {
+		for _, e := range s {
+			if e.y > y {
+				y = e.y
+			}
+		}
+	}
+	return y
+}
+
+type Grid [][]byte
+
+func (grid Grid) String() string {
+	var s string
+	for y := 0; y < len(grid); y++ {
+		for x := 0; x < len(grid[y]); x++ {
+			switch grid[y][x] {
+			case 0:
+				s += "."
+			case 1:
+				s += "#"
+			case 2:
+				s += "O"
+			default:
+				s += " "
+			}
+		}
+		s += "\n"
+	}
+	return s
+}
+func (grid *Grid) Init(width, height int) {
+	*grid = make(Grid, height)
+	for y := 0; y < height; y++ {
+		(*grid)[y] = make([]byte, width)
+	}
+}
+func (grid *Grid) AddShape(s Shape, offset int) {
+	for i := 1; i < len(s); i++ {
+		x1, y1 := s[i-1].x-offset, s[i-1].y
+		x2, y2 := s[i].x-offset, s[i].y
+		if x1 > x2 {
+			x1, x2 = x2, x1
+		}
+		if y1 > y2 {
+			y1, y2 = y2, y1
+		}
+		for x := x1; x <= x2; x++ {
+			for y := y1; y <= y2; y++ {
+				(*grid)[y][x] = 1
+			}
+		}
+	}
+}
+
+func main() {
+	if len(os.Args) > 1 {
+		day14(os.Args[1])
+	} else if len(os.Args) == 1 {
+		fmt.Printf("usage: %s inputfile.txt\n", os.Args[0])
+	} else {
+		fmt.Println("No input data")
+	}
+}
+
+func day14(input_file string) {
+	fmt.Printf("day 14 input filename: %s\n", input_file)
+	input, err := os.Open(input_file)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer input.Close()
+	scanner := bufio.NewScanner(input)
+	var shapes Shapes
+	for scanner.Scan() {
+		in := scanner.Text()
+		edges := strings.Split(in, " -> ")
+		var s Shape
+		for _, edge := range edges {
+			var p Pos
+			xs, ys, found := strings.Cut(edge, ",")
+			if !found {
+				log.Fatal("invalid input")
+			}
+			p.x, err = strconv.Atoi(xs)
+			if err != nil {
+				log.Fatal(err)
+			}
+			p.y, err = strconv.Atoi(ys)
+			if err != nil {
+				log.Fatal(err)
+			}
+			s = append(s, p)
+		}
+		if len(s) <= 1 {
+			log.Fatal("invalid shape", s)
+		}
+		shapes = append(shapes, s)
+	}
+	if err = scanner.Err(); err != nil {
+		log.Fatal(err)
+	}
+
+	height := shapes.GetMaxY() + 1
+	offsetX := shapes.GetMinX()
+	width := shapes.GetMaxX() - offsetX + 1
+	var grid Grid
+	grid.Init(width, height)
+	for _, s := range shapes {
+		grid.AddShape(s, offsetX)
+	}
+	fmt.Printf("%v\n", grid)
+}
diff --git a/day14/sample.txt b/day14/sample.txt
@@ -0,0 +1,2 @@
+498,4 -> 498,6 -> 496,6
+503,4 -> 502,4 -> 502,9 -> 494,9