import java.util.Scanner;

public class RemoveDuplicateLetters {     
    public static void main (String args[]){
        Scanner scanner = new Scanner(System.in);
        System.out.println ("Input Word");
        String word = scanner.nextLine();
        StringBuilder str = new StringBuilder (word);
        for (int i = 0; i <str.length(); i++) {
            for (int j = 0; j <str.length(); j++){
                if ((str.charAt(i) == str.charAt(j)) && i != j){
                    str.deleteCharAt(j);
                    j--;
                }
            }
        }
        if (word.equals (str.toString())){
            System.out.println("No repeated letters");
        }
        else{
            System.out.println ("The output is: " + str);
        }
    }
}