import java.util.*;

import java.io.*;
 
public class Main{

    public static int stringToInt(char i, int[] a){
        if(i == 'A') return a[0];
        if(i == 'B') return a[1];
        if(i == 'C') return a[2];
        return 0;
    }
 
	public static void main(String[] $){
		Scanner s = new Scanner(System.in);
        String S = s.next();
        for(int i = 0; i < S.length(); i++){
            System.out.print("x");
        }
        System.out.println();
        
	}
} 
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz