import java.util.Scanner;

public class SubtractQuiz
{
    public static void main(String[] args) 
    {
       int number1, number2;

       number1 = (int) (9*Math.random() + 1);
       number2 = (int) (9*Math.random() + 1);

       if ( number1 < number2 )
       {
          int helper;
          helper = number1;
	  number1 = number2;
	  number2 = helper;
       }

       System.out.print("What is ");
       System.out.print(number1);
       System.out.print("-");
       System.out.print(number2);
       System.out.println("?");

       Scanner input = new Scanner(System.in);
       int answer = input.nextInt();

       if ( answer == (number1-number2) )
          System.out.println("Correct");
       else
          System.out.println("Incorrect");
    }
}