From e7c9108b95e39d7ea5a29ae06d619c4727f11027 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Fri, 29 Oct 2021 23:02:39 +0200 Subject: Initial commit --- 2020/03/input | 323 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2020/03/puzzle-1.awk | 14 +++ 2020/03/puzzle-2.awk | 36 ++++++ 3 files changed, 373 insertions(+) create mode 100644 2020/03/input create mode 100755 2020/03/puzzle-1.awk create mode 100755 2020/03/puzzle-2.awk (limited to '2020/03') diff --git a/2020/03/input b/2020/03/input new file mode 100644 index 0000000..6673c40 --- /dev/null +++ b/2020/03/input @@ -0,0 +1,323 @@ +....#..#.......#........#....#. +..##.#.#.#...................#. +....#.#.##..#....#......#...... +.........#.#......##.....#..... +..........#.###.##...##........ +#....#.#.......##.....#..#..... +#...........#.#...#..#..##.##.. +......##.............#.....#... +..##..........###..#.#..##..... +...........#........#......##.. +..##...........##.............. +..#......###.#.....#.#.#....... 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+...#..#.#....##...........#..#. +.....##..##......#.#........... +......#.....#....####....#..... +.#.#.#...#..#..#...........#... +.....#......................#.. +.........#.........#.###.##.... +.....#......##..........#...... +..#...........##...........#... +..............#.........#.....# +..#....#..#...#...##.#......... +.#.#.#....#..........#......... diff --git a/2020/03/puzzle-1.awk b/2020/03/puzzle-1.awk new file mode 100755 index 0000000..3eac2ba --- /dev/null +++ b/2020/03/puzzle-1.awk @@ -0,0 +1,14 @@ +#!/usr/bin/env -S awk -f + +BEGIN { x = 1 } +{ + len = split($0, obs, "") + + if (x > len) + x -= len + if (obs[x] == "#") + count++ + + x += 3 +} +END { print count } diff --git a/2020/03/puzzle-2.awk b/2020/03/puzzle-2.awk new file mode 100755 index 0000000..88e0625 --- /dev/null +++ b/2020/03/puzzle-2.awk @@ -0,0 +1,36 @@ +#!/usr/bin/env -S awk -f + +BEGIN { + slope[1] = 1 + slope[2] = 1 + slope[3] = 1 + slope[4] = 1 + slope[5] = 1 +} + +{ + len = split($0, obs, "") + + right = 1 + for (i = 1; i < 5; i++) { + if (slope[i] > len) + slope[i] -= len + + if (obs[slope[i]] == "#") + count[i]++ + + slope[i] += right + right += 2 + } + + # Specific code for slope 5 + if (NR % 2 == 1) { + if (slope[5] > len) + slope[5] -= len + + if (obs[slope[5]++] == "#") + count[5]++ + } +} + +END { print count[1] * count[2] * count[3] * count[4] * count[5] } -- cgit v1.2.3