/*
    Those who cannot remember the past are condemned to repeat it.
                                            - Dynamic Programming
    
    I never lose, I either win or I learn.
                - Competitive Programming

*/

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;
        PrintWriter pw = new PrintWriter(System.out);

        char[] c = br.readLine().toCharArray();

        for(int i=0 ; i<c.length ; i++) c[i] = 'x';

        pw.println(c);
        
        
        
        
        
        
        
        pw.flush();
        pw.close();
    }
}

/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