import java.util.Scanner;

public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	}
} Main public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	} main {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String str1 = scan.next(); str1 scan.next() scan.next scan scan.close() scan.close scan String str2 = str1.replaceAll("[a-z]", "x"); str2 str1.replaceAll("[a-z]", "x") str1.replaceAll str1 "[a-z]" "x" System.out.println(str2) System.out.println System.out System System.out str2 String args[] args public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	}
} public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
		String str1 = scan.next();
		scan.close();
		
		String str2 = str1.replaceAll("[a-z]", "x");
		System.out.println(str2);
	}
}