const std = @import("std"); pub fn main() !void { var gpa = std.heap.GeneralPurposeAllocator(.{}){}; const allocator = gpa.allocator(); const buf = @embedFile("input"); var ranges = std.mem.tokenizeScalar(u8, buf[0..(buf.len-1)], ','); var sum: u64 = 0; var sump1: u64 = 0; while (ranges.next()) |range| { var ranges_split = std.mem.tokenizeScalar(u8, range, '-'); const num1 = try std.fmt.parseInt(u64, ranges_split.next().?, 10); const num2 = try std.fmt.parseInt(u64, ranges_split.next().?, 10); for (num1..num2+1) |num| { const numstr: []u8 = try std.fmt.allocPrint(allocator, "{d}", .{num}); for(2..numstr.len+1) |n| { if (numstr.len % n != 0) continue; const incr: usize = numstr.len/n; var i: usize = 0; const valid = while (i+incr*2 < numstr.len+1) : (i += incr) { if (!std.mem.eql(u8, numstr[i..i+incr], numstr[i+incr..i+incr+incr])) { break true; } } else false; if (!valid) { sum += num; if (n == 2) sump1 += num; break; } } } } std.debug.print("{} {}\n", .{sump1, sum}); }