import java.util.Scanner;

public class Main {
	public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	}
} Main public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	} main {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String s = scan.next(); s scan.next() scan.next scan s = s.replaceAll("[a-z]", "x") s s.replaceAll("[a-z]", "x") s.replaceAll s "[a-z]" "x" System.out.println(s) System.out.println System.out System System.out s scan.close() scan.close scan String[] argv argv public class Main {
	public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	}
} public class Main {
	public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] argv) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		s = s.replaceAll("[a-z]", "x");
		System.out.println(s);

		scan.close();
	}
}
