42 lines
1,016 B
Nim
42 lines
1,016 B
Nim
import os, sets
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import std/[strutils, sequtils]
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type
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Dot = (uint16, uint16)
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proc main() =
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let fileName = paramStr(1)
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var dots = HashSet[Dot]()
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for line in fileName.lines:
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if line.strip() == "":
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continue
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if not line.startsWith("fold"):
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let split = line.strip.split(",")
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dots.incl (split[0].parseInt.uint16, split[1].parseInt.uint16)
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else:
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var fold: (int, int) = (-1, -1)
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if line.startsWith("fold along x="):
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fold[0] = line.replace("fold along x=", "").parseInt
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else:
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fold[1] = line.replace("fold along y=", "").parseInt
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for dot in dots.deepCopy:
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var newDot: Dot = dot
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if fold[0] != -1 and dot[0] > fold[0].uint16:
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newDot[0] = 2*fold[0].uint16 - dot[0]
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dots.excl dot
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if fold[1] != -1 and dot[1] > fold[1].uint16:
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newDot[1] = 2*fold[1].uint16 - dot[1]
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dots.excl dot
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dots.incl newDot
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echo "Number of dots after one fold: ", dots.len
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return
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main()
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