import java.util.Scanner;

public class _1636 {
    public static void main(String args[]) {
        Scanner s = new Scanner(System.in);
        int n, sum = 0;
        int a, b;
        a = s.nextInt();
        b = s.nextInt();

        for (int i = 1; i < 10; i++) {
            n = s.nextInt();
            sum = sum + (n * 20);

        }
        a = a + sum;
        if (b < a) {
            System.out.println("Dirty debug :(");
        } else {
            System.out.println("No chance.");
        }
    }
}