
import java.util.*;

public class Main{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);     
        String s1=sc.next();
        long size=s1.length();
        String ans="";
        for(long i=0;i<size;i++)
        {
        	ans+="x";
        	
        	
        }
        		System.out.println(ans);
       



        }
    
}
/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