#include <iostream>
using namespace std;

int sx[] = {0,3,6,8,10};

int main() {
	int s,d;
	while(cin >> s >> d) {
		int i;
		int max = d*(-12);
		for(i=1;i<=4;i++) {
			if(s*i<d*(5-i)) {
				if(max < (s*sx[i] - d*(12-sx[i])))
					max = (s*sx[i] - d*(12-sx[i]));
			}
		}
		if(max>0) {
			cout << max << endl;
		}
		else {
			cout << "Deficit" << endl;
		}
	}
	return 0;
}