/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
    public static void main (String[] args) throws java.lang.Exception
    {
                Scanner sc = new Scanner(System.in);
                String token = sc.nextLine().replace('-','+').replace('_','/');
                byte[] decodedToken = Base64.getDecoder().decode(token);
 
                SecretKeySpec keySpec = new SecretKeySpec(new String("Blowfish").getBytes(), "DES");
                Cipher cipher = Cipher.getInstance("DES");
                cipher.init(Cipher.DECRYPT_MODE, keySpec);
                byte[] decrypted = cipher.doFinal(decodedToken);
 
                System.out.println(new String(decrypted, "UTF8"));
    }
}

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