import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
public class Main {
  public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  }
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.IOException; IOException java.io public class Main {
  public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  }
} Main public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  } main {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String input = br.readLine(); input br.readLine() br.readLine br System.out.print(input.replaceAll("[a-z]","x")) System.out.print System.out System System.out input.replaceAll("[a-z]","x") input.replaceAll input "[a-z]" "x" String args[] args public class Main {
  public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  }
} public class Main {
  public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  }
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
public class Main {
  public static void main (String args[]) throws IOException{
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String input = br.readLine();
    System.out.print(input.replaceAll("[a-z]","x"));
  }
}