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Finish day12, part 1

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This feels like cheating
This commit is contained in:
ktkk 2025-12-12 22:07:05 +00:00
parent f088a5a21a
commit 0633ee80a9
1 changed files with 41 additions and 40 deletions
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81
src/days/day12.zig
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@ -3,42 +3,42 @@ const std = @import("std");
pub const title = "Day 12: Christmas Tree Farm"; pub const title = "Day 12: Christmas Tree Farm";
pub fn run(allocator: std.mem.Allocator) !void { pub fn run(allocator: std.mem.Allocator) !void {
//const input = @embedFile("./input/day12.txt"); const input = @embedFile("./input/day12.txt");
const input = //const input =
\\0: // \\0:
\\### // \\###
\\##. // \\##.
\\##. // \\##.
\\ // \\
\\1: // \\1:
\\### // \\###
\\##. // \\##.
\\.## // \\.##
\\ // \\
\\2: // \\2:
\\.## // \\.##
\\### // \\###
\\##. // \\##.
\\ // \\
\\3: // \\3:
\\##. // \\##.
\\### // \\###
\\##. // \\##.
\\ // \\
\\4: // \\4:
\\### // \\###
\\#.. // \\#..
\\### // \\###
\\ // \\
\\5: // \\5:
\\### // \\###
\\.#. // \\.#.
\\### // \\###
\\ // \\
\\4x4: 0 0 0 0 2 0 // \\4x4: 0 0 0 0 2 0
\\12x5: 1 0 1 0 2 2 // \\12x5: 1 0 1 0 2 2
\\12x5: 1 0 1 0 3 2 // \\12x5: 1 0 1 0 3 2
; // ;
var lines = std.mem.tokenizeScalar(u8, input, '\n'); var lines = std.mem.tokenizeScalar(u8, input, '\n');
@ -69,8 +69,8 @@ pub fn run(allocator: std.mem.Allocator) !void {
if (semicolon_pos != 0) { if (semicolon_pos != 0) {
if (x_pos) |p| { if (x_pos) |p| {
// region // region
const width = try std.fmt.parseUnsigned(u8, line[0..p], 10); const width = try std.fmt.parseUnsigned(usize, line[0..p], 10);
const height = try std.fmt.parseUnsigned(u8, line[p + 1..semicolon_pos], 10); const height = try std.fmt.parseUnsigned(usize, line[p + 1..semicolon_pos], 10);
var required_presents: std.ArrayList(u8) = .empty; var required_presents: std.ArrayList(u8) = .empty;
defer required_presents.deinit(allocator); defer required_presents.deinit(allocator);
@ -114,6 +114,7 @@ pub fn run(allocator: std.mem.Allocator) !void {
var accumulator: usize = 0; var accumulator: usize = 0;
for (regions.items) |region| { for (regions.items) |region| {
std.debug.print("{f}\n", .{region});
var area_needed: usize = 0; var area_needed: usize = 0;
for (region.required_presents, 0..) |amount, i| { for (region.required_presents, 0..) |amount, i| {
area_needed += amount * presents.items[i].area(); area_needed += amount * presents.items[i].area();
@ -167,8 +168,8 @@ const Present = struct {
}; };
const Region = struct { const Region = struct {
width: u8, width: usize,
height: u8, height: usize,
required_presents: []u8, required_presents: []u8,
const Self = @This(); const Self = @This();