Add solution for day03
Created by voroskoi on April 21, 2022
6U3VHREX6TLSEFFTFFCQ5T3ZOWLMEZ3IDNHHGYYMM4NYMP2TNCMQC Dependencies
In channels
main
Change contents
Insertion in src/main_test.zig at line 4 [3.55]
Insertion in src/main.zig at line 6 [3.129]
Replacement in src/main.zig at line 9 [3.129]
File addition: day03.zig
[3.15]const std = @import("std");const PATH = "../input/day03.txt";const ROWS = 323;const COLS = 31;const Map = std.StaticBitSet(ROWS * COLS);pub fn first(allocator: ?std.mem.Allocator) anyerror!usize {_ = allocator;const map = parseInput();const move = [2]usize{ 1, 3 };var row: usize = 0;var col: usize = 0;var trees: usize = 0;while (row < ROWS) : ({row += move[0];col += move[1];}) {// std.debug.print("{d} {d} {}\n", .{ row, col % COLS, map.isSet(row * COLS + col % COLS) });if (map.isSet(row * COLS + col % COLS)) trees += 1;}return trees;}pub fn second(allocator: ?std.mem.Allocator) anyerror!usize {_ = allocator;const map = parseInput();const moves = [_][2]usize{.{ 1, 3 },.{ 1, 1 },.{ 1, 5 },.{ 1, 7 },.{ 2, 1 },};var ret: usize = 1;for (moves) |move| {var row: usize = 0;var col: usize = 0;var trees: usize = 0;while (row < ROWS) : ({row += move[0];col += move[1];}) {// std.debug.print("{d} {d} {}\n", .{ row, col % COLS, map.isSet(row * COLS + col % COLS) });if (map.isSet(row * COLS + col % COLS)) trees += 1;}ret *= trees;}return ret;}fn parseInput() Map {const file = @embedFile(PATH);var lines = std.mem.tokenize(u8, file, "\n");var map = Map.initEmpty();var row: usize = 0;while (lines.next()) |line| : (row += 1) {for (line) |ch, col| {// std.debug.print("{d} {d} {s}\n", .{row, col, line});if (ch == '#') map.set(row * COLS + col);}}return map;}test "day03a" {try std.testing.expectEqual(@as(usize, 148), try first(std.testing.allocator));}test "day03b" {try std.testing.expectEqual(@as(usize, 727923200), try second(std.testing.allocator));}Deletion in src/day02.zig at line 4 [2.203]
File addition: day03.txt
[3.2805]........#.............#...........#....#...#....#..............#..#...#............#.....#..#..#......#..##............###............#......#..#..#........#..#.......#.........#.#...............#..#....##..#.##....#...#....##...#..................##..........#.##...#....##..#.....#....#...#..............#..............................#..#..##.##.#..................#......#.##..#............#................#.......#...#.....##.#..##..........#......#.......#.....#..........#...#..#.......#.......#...#...#.##.......#.#...........#...#...#...##.........#..............#.#....#.......#..#..#..#.#....#....................#........#...#..........#.##......#...#..#.##.......#......#.#.....#.#.............#.#.##..#..##......##...#.............#......#........#.....#...........#.......#....#.#...#.........#........#...........#...#.........#.#...........###....#.....#...........##....##........#....#..####....#.....#..#....#..........#...........#...........#.......#....#.#.........#......#...#.......#..###...............#......#..#......#..#.......#.....#............#..#........#.#.#.#..#.......#.....#....#....##...#.........#...##.....#..#.......#..#..#..#...##.....#.......#............#.....#....#........##....##...#........#.....#...#............................#........#...................#............#.#.#...#.#.......##..#.............#.........#.##..#........#..#...#...............#.#....#...........#...#.....#..#....#.....#...#.........#.#................#......................##......#...#....##...#...#.......##.#....#................#........#.......#.......##.#.#....................#.#..............#.......#....#.....#...#.......#..#...#..................#....#..#......#..........#...##................#.......#...#..#..##..............#..#...##...#..#.#.....#...#..#.#...#.........#.#..............###....#.......#...#................#......##.#...#..##..#......................#.#....................#...........#...#.#..#..#.....#.#...#...............#....#.....#...........#......##.....##...#......#..##.....#.....#.....###.#.....#....##...#...........###.................................#..##.#...#..................#....##.#.......#.#.#...#....#.........#..#.#.#.......#........##...................##.#....#.#............#..........#..##.#....#.................##..#....#......................#....#...........##...#.........#.#..#..#..........#......#........#......#.............#.#.#...............#.......#..#..##...#.##..........#......#....................#.#..............#....#...........#.#.#........#....##.##...............#.....#.......#..#......#....#..........#.#.....#.#....#............##.#.....#..#.....#.#.....................#...#....#.#............#..#....#...#...#................#.#.........#.......#..#..#.#..##..##............#...........................#..#.......#...........#....#.#.#......#..#...#........#...##............#......#.#.......#...#...#..##................#...................#.#..##....#.#...................#..#......#......#......#.#.#....#........#............#..#.##..#..#.........#...#....#.#...#..#.......#..#....#...##.........#..#...#.........#...........#.............#.....#.....................#.........#..#...............#.#...#....#..........#........#........#....#........##..##............#....#..#.#.......#...#.......#........#....#...##....#.#...#...#........##.....#....###..#....#....##......#........#............#..#.#..........#....#....#...#.....#.......##.....................#..........#.##..#...#..#..............#......#..................#......##....#..#..##..#.......#..#.#......#..............#........#.....#.#.#.##............#..#............#...#...........#..##.........#....#...#....#.......#..........#.#..#..#..#....#.....#..#......#..##..............#...#...#..........###......###.........##.##......#..#............#...#...........#.#.....#...#.....#.#..#...#............#.................#...#...#..........##........###..#..........#..................###.....#........#...#.............#.....#......#.....#.....#....#.#.........##.......##..##...#.......##..............#....##.........#......#...........#.....##..#.....#..#...........####...#..#.........#.##....#..#.#...#.......#.........#.#.##.#.#...#....#.#.#..............#...##........##.....#..#........#..........##...##.###...##..........#.#.........................#......#.................#.....#.#.......#.......#...#.....#....#.#..#..............#....................##.......#..................#.#...##.....#............#..##........#..........#....#.#.......##.#.....#..#.....................#.#..#....##.....#.................#...#..#..##....#.#.................#......#.#.......#.....#...#.#.......#...#.##..............#..........#....#.#.#.............#..#..........#..##.....#......#......#...#......#...#.###..#....##......##........#...#..........#.....#.......#.#.........#.....#.....#.#...........#...#....#.................................#.##..............#...#.......#.##...#.#.......#.......#......................#....#.#...#.#........#..........#......#....#...#.............#.......#...###.....#.#.#..#...#....##.#...............##.......#.......#..................#......####...............#.......##......#......#.#.......##.#.#......##..###....#....#......#.##.......##.##...#.##...............##............#.......#........#..#.....##.#.............#..........#.....##...........#.........#......#......##.#............#.......#..#......#.#..........#.......#...........#..#..##.#..................##................#.............#........##........#......##...##....#..#.#.....#..#....#..............#....#.....#.....#........#......##.....#....#....#......#.................#..#.#......#.......#..#......#....#.#...#.#....#.........#..#..........#.###......#............#...#...#.....##......#...#.....#....##...#...##.........#....................#.....................#....#..........###....#..........#....#...#..#.............#....#........#.#......#....#........#...#.......#..#...#.#...#..#.................##.#.....#.....###.......#...#...................#.......#...#.#.....#.........#.........#.....#.#.......#........#.......................##.....#.#..#....#.......#.........#....#..#....####........................#.....#...##.............#.........#...#..#.......##..#.........#....#.#............##...#.#...........#....#...........................##......###.......##....#.#.........#.#....#.#.#...........##....#........#...#..#..#..#..#.......#..#....#.#.......#..#..#..#...#.....##...#.##....#.#...#...............#..#....#..#...........##..##.........#.#.....#................#...##...#.#...#.....#.##..#..#.............#..........#...........#.......#......#.......#....#....#...##.......#..#.##........###..#......#.......#...........###......#..#..#.#.........#.#.........#.#.....##.......##.##.##......##..................#...#..........#.......................#.............#..#...........#...#...#.....................#...#......###...#................#.#.##....................#........#......#.............##......#.#..#.....#.#.....#..#.##.....##...#.........#.........#......#.......#.......#......#....#........#..#..##.....#.........#.............##.##.#...#.........##.#..................#..#..#..##......#..#...............###.........##............##.............................#...##...#...#.#..#.#......#.#..#.............##.#..#..##.........#.#.#...#.......##.#....................##..........#..#.....#.....#..#..#....#......#......#.##....#............###..#.............#..###................#.........#..#.....#.......#....#.............#.......#..#........#....#.....#.#.##..#.#...##........#.##...#..........#............#..............#...............##.............###........#.#............###..#.............#......##.............#...#.....#..........#......#....#........#.#..............#..#..............#.................#...........###........#.........###.....#.....#.#..............##......#.#..#...........#.........#..##..#................................#.....#..#....#....#......#....#...#......#.#..#....#.......#......#.##.......#......#............#..###..#................#..#.....#........##...#.............##.........##....#...##...#..........#.................##..#.......#...............#............#..###....#.#.##.#......#...#.##..##...............##.........#......................#....##...#......#....#...................#..........#..#.......#......##....#....#........#.#...................#.........#.#........###....#..........#..........#....#....#........##..#....#..#.........#..#.......................#..#...#..#...##.........#....##....#......#....#................................#........#...#.#...#.#..#........#..##...#.#...............#.....#....#.........#.........#...#...........##.........#.....##........#.#...#...#......#............#.....#...#.#.............###....#.....#.................##...#..........#....#.#........##..##..........#...........#............#..#....##......##...................#.#........#.#..#.#.....................#..##..#............##.###..#.#.#...#....#.#..........#.#............#....#.....#.............##....#...#.......#.....................##.##....#...............#............#...................#.............#....#.....................#......#............##.......#....#..##...#...#..#....#........................#.#.#...#......##...........##........##.#....#....#..............#.....#..#..#...#.##....#..........#....#.#..#..#..#......##..............#....................#.....#.#....#.......#.........#....##..#..##..#..........#......................#.....###...#..#......#...............#.....................#.....................................#.....###.......#..#....#....#..........#.................#.......#.......###.......#..##...............#.##....................#..#.#..#...........#.......#....##.#...#..#.#...#....#...................#...#....#.##......#.#....#.......................#.#.....#.....#..##......#..##...........#..#.....#.##..