diff options
| author | j-james | 2020-12-03 06:50:47 +0000 |
|---|---|---|
| committer | j-james | 2020-12-03 08:24:42 +0000 |
| commit | f43e27cd290b652bdcf46c88fdf0bac585d7d58c (patch) | |
| tree | b766b00a0641cbebc76a2b9c35eb2e39746fdab0 | |
| parent | ca62f5d0ae8a96c5d85d3a447a00150d186be605 (diff) | |
Day Three
| -rw-r--r-- | 2020/input/three.txt | 323 | ||||
| -rw-r--r-- | 2020/three.nim | 14 |
2 files changed, 337 insertions, 0 deletions
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+#...........#...##.....#..#.#.. +..#....#..#.#.#...#..#....#.#.. +...##.#.....#..#...##..#.....#. +..#.#................#........# +......#...#.............#...... +.##............#....#...#..#... +....#...#...........#.......#.. +.###..#.......#.............#.# +.#.#....#.#...........#.#...... +...#.........#.........#..#.... +...#..........#.#.....#.#...... +.....#........#....##......#... +..#.#.#......#..#.#......#....# +.#.#..#................#.#..... +.#.#.........##...#.......#.#.# +#..#.....#...#..#...........#.. +..##......####......#..#....### +#.....###....#.#........#..#..# +..##.#...#.#..##..........#..#. +#.........#.#.............#...# +...#.#...#...#.#.#....##....... +##.##...#.....#...#...........# +....#........#.#.....#......... +.................##..#..##...## +.....##....#...#...#.....#..#.. +....#...#........#............# +..#...........##....#...#...##. +.....#......#.........#..##.#.. diff --git a/2020/three.nim b/2020/three.nim new file mode 100644 index 0000000..8455783 --- /dev/null +++ b/2020/three.nim @@ -0,0 +1,14 @@ +import os, strutils, std/enumerate + +let input: string = paramStr(1) + +proc descend(x: int, y: int): int = + var longitude: int = 0 + for i, latitude in enumerate(lines(input)): + if i mod y == 0: + if latitude[longitude mod len(latitude)] == '#': + inc(result) + longitude += x + +echo descend(3, 1) +echo descend(1, 1) * descend(3, 1) * descend(5, 1) * descend(7, 1) * descend(1, 2) |