import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

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

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