day02

1 files changed, 27 insertions, 0 deletions

diff --git a/day02.zig b/day02.zig
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+// hat tip to https://gitlab.cs.washington.edu/fidelp/advent-of-code-2022/-/blob/main/advent-2022-02-rough.fs
+
+const std = @import("std");
+const data = @embedFile("day02");
+
+pub fn main() !void {
+    var lines = std.mem.split(u8, data, "\n");
+
+    var part1: i32 = 0;
+    var part2: i32 = 0;
+
+    while (lines.next()) |line| {
+        if (line.len == 0)
+            break;
+
+        var p1: i32 = line[0] - 'A';
+        var p2: i32 = line[2] - 'X';
+
+        part1 += 3 * @rem(p2 - p1 + 4, 3) + (p2 + 1);
+
+        p2 = @rem(p1 + p2 + 2, 3);
+
+        part2 += 3 * @rem(p2 - p1 + 4, 3) + (p2 + 1);
+    }
+
+    std.debug.print("{} {}\n", .{ part1, part2 });
+}