

import java.util.*;

class Main {
    public static void main(String args[]){
        Scanner s=new Scanner(System.in);
        String u= s.next();
        StringBuilder b =new StringBuilder();
        for (int i = 0; i <u.length() ; i++) {
            b.append("x");
        }
        System.out.println(b.toString());

    }


}
/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