const std = @import("std");
const print = std.debug.print;

pub fn readAllInput(day: u8, allocator: std.mem.Allocator) ![]const u8 {
    var fileName: [16]u8 = undefined;
    const inputFile = try std.fmt.bufPrint(&fileName, "day{d}.txt", .{day});
    const file = try std.fs.cwd().openFile(inputFile, .{});
    defer file.close();
    const stat = try file.stat();
    return try file.reader().readAllAlloc(allocator, stat.size);
}