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authorXander Bil <xander@biltopia.org>2024-12-10 20:30:02 +0100
committerXander Bil <xander@biltopia.org>2024-12-10 20:30:02 +0100
commit0c43f32a9349a2c7fbec3b42e3791a4e8fdcfe53 (patch)
tree6f576df3b8931728cbb021c86d0667b044a7c3ea /src
parent2cb1933700edd3af17dabedeff37b18dbaa0e07d (diff)
downloadaoc2024-0c43f32a9349a2c7fbec3b42e3791a4e8fdcfe53.tar.xz
aoc2024-0c43f32a9349a2c7fbec3b42e3791a4e8fdcfe53.zip
make day10 brrrrr
Diffstat (limited to 'src')
-rw-r--r--src/day10.zig18
1 files changed, 6 insertions, 12 deletions
diff --git a/src/day10.zig b/src/day10.zig
index b72c9e3..13bed52 100644
--- a/src/day10.zig
+++ b/src/day10.zig
@@ -139,17 +139,14 @@ fn part2(buffer: []const u8, allocator: std.mem.Allocator) !void {
}
var out: i32 = 0;
+ const lookup: [][]i32 = try allocator.alloc([]i32, width);
+ for (0..width) |i| {
+ lookup[i] = try allocator.alloc(i32, width);
+ }
+ defer allocator.free(lookup);
for (0..width) |r| {
for (0..width) |c| {
if (grid[r][c] == 0) {
- var lookup: [][]i32 = try allocator.alloc([]i32, width);
- defer allocator.free(lookup);
-
- for (0..width) |i| {
- lookup[i] = try allocator.alloc(i32, width);
- @memset(lookup[i], 0);
- }
-
out += try dfs2(
lookup,
grid,
@@ -157,15 +154,12 @@ fn part2(buffer: []const u8, allocator: std.mem.Allocator) !void {
@intCast(c),
-1,
);
-
- for (0..width) |i| {
- allocator.free(lookup[i]);
- }
}
}
}
for (0..width) |i| {
+ allocator.free(lookup[i]);
allocator.free(grid[i]);
}
print("{d}\n", .{out});