import java.util.Scanner;
import java.util.Comparator;
import java.util.Arrays;
import java.util.Collections;
import java.util.StringJoiner;
class Main{
  public static void main(String[] args){
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    int N = S.length();
    String[] split = S.split("");
    //文字置き換え
    for (int i = 0; i < N ; i++) {
      split[i] = "x";
    }
    //文字列に直す
    StringJoiner T = new StringJoiner("");
    for (String s : split) {
      T.add(s);
    }
    System.out.println(T.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