private static void Main(string[] args)
        {
            var result1 = Puzzle02.CountValidPolicy1Passwords(PuzzleInput.ToPuzzle2Input());
            var result2 = Puzzle02.CountValidPolicy2Passwords(PuzzleInput.ToPuzzle2Input());

            Console.WriteLine($"Valid passwords (policy 1): {result1}");
            Console.WriteLine($"Valid passwords (policy 2): {result2}");
        }
        public void PasswordPolicy2Tests()
        {
            var stringInput = @"1-3 a: abcde
1-3 b: cdefg
2-9 c: ccccccccc";

            var count = Puzzle02.CountValidPolicy2Passwords(stringInput.ToPuzzle2Input());

            Assert.Equal(1, count);
        }