0和1

import java.util.*;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        StringBuilder r = new StringBuilder();
        for(int i = 0; i < s.length(); ++i){
            int n = s.charAt(i) - '0';
            r.append(n%2);
        }
        System.out.println(Integer.parseInt(r.toString()));
    }
}