import java.io.*;
import java.util.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Solution {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String string = scanner.nextLine();
        
        scanner.close();
        
        MessageDigest md;
        
        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
        
        byte[] messageDigest = md.digest(string.getBytes());
        StringBuilder sb = new StringBuilder();
        
        for (byte b : messageDigest) {
            sb.append(String.format("%02x", b & 0xff));
        }
        
        System.out.print(sb.toString());
    }
}