
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	}

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

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	}

} Main public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	} main {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	} String Alphabet = "abcdefghijklmnopqrstuvwxyz"; Alphabet "abcdefghijklmnopqrstuvwxyz" String ans = ""; ans "" Scanner kb = new Scanner(System.in); kb new Scanner(System.in) String s = kb.next(); s kb.next() kb.next kb for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		} int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		} {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		} if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			} Alphabet.contains(String.valueOf(s.charAt(i))) Alphabet.contains Alphabet String.valueOf(s.charAt(i)) String.valueOf String s.charAt(i) s.charAt s i {
				ans += 'x';
			} ans += 'x' ans 'x' System.out.println(ans) System.out.println System.out System System.out ans kb.close() kb.close kb String[] args args public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	}

} public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	}

} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String Alphabet = "abcdefghijklmnopqrstuvwxyz";
//		System.out.println(a.charAt(index));
		String ans = "";
		Scanner kb = new Scanner(System.in);
		String s = kb.next();
		for (int i = 0; i < s.length(); i++) {
			if (Alphabet.contains(String.valueOf(s.charAt(i)))) {
				ans += 'x';
			}
		}
		System.out.println(ans);
		kb.close();
	}

}
