using System;

public class Program

{

    public static void Main()

        {

        bool [] digit_seen = new bool [10];

        int digit;

        long n=5;

        while (n > 0) {

        digit = (int) (n % 10);

        if (digit_seen[digit]) //n= digital

        break;

        digit_seen[digit] = true;

        n /= 10;

        }

        if (n > 0)

        Console.WriteLine("Repeated digit\n");

        else

        Console.WriteLine("No repeated digit\n");

        }

}