static void Main() { var day = new Day25(); var part1 = day.Part1(); var part2 = day.Part2(); Console.WriteLine($"Part 1: {part1}"); Console.WriteLine($"Part 2: {part2}"); Console.WriteLine("Press \'1\' to submit Part 1, \'2\' to Part 2..."); var key = Console.ReadKey(); var value = (int)char.GetNumericValue(key.KeyChar); var answer = value == 1 ? part1 : part2; day.SubmitAnswer(value, answer); Console.WriteLine("Press any key to continue..."); Console.ReadKey(); }