import sys

def hanoi(n, a, b, c):

    if n == 1:

        print('%c --> %c' % (a, c))

    else:

        hanoi(n-1, a, c, b)

        print('%c --> %c' % (a, c))

        hanoi(n-1, b, a, c)

if __name__ == "__main__":

    n = int(sys.stdin.readline())

    hanoi(n, 'A', 'B', 'C')

using System.Diagnostics;

namespace Hanoi

{

    class Program

    {

        static void Main(string[] args)

        {

            Process process = new Process

            {

                StartInfo = new ProcessStartInfo

                {

                    FileName = "python",

                    Arguments = "hanoi.py",

                    UseShellExecute = false

                }

            };

            process.Start();

            process.WaitForExit();

        }

    }

}