import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	}

} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	} main {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc S = S.replaceAll(".", "x") S S.replaceAll(".", "x") S.replaceAll S "." "x" System.out.println(S) System.out.println System.out System System.out S String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	}

} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		//文字列S
		String S = sc.next();
		//int S = sc.nextInt();

		//すべて'x'に変換する
		S = S.replaceAll(".", "x");

		System.out.println(S);
	}

}
