package timus;
import java.util.Scanner;
/**
* Created by sherxon on 12/5/16.
*/
public class PenaltyTime {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n=in.nextInt();
int m=in.nextInt();
int sum=0;
for (int i = 0; i < 10; i++) {
sum+=in.nextInt();
}
sum*=20;
System.out.println(m-sum >= n ? "No chance." : "Dirty debug :(");
}
}