//package backTrack;
 
import java.util.Arrays;
import java.util.Scanner;
 
/**
 * Created by rajanW(683281) on 14-Mar-15.
 * at 2:34 PM
 * UVa 10576
 * Explanation : http://o...content-available-to-author-only...a.es/board/viewtopic.php?f=25&t=4343
 * Backtracking easy
 */
class Y2K {
 
    static int months[];
    static int total;
    static int temp;
 
    static void update(){
 
        if(temp>total){
//            System.out.println("total="+temp);
//            System.out.println(Arrays.toString(months));
            total=temp;}
    }
 
    static void solve(int s,int d,int month){
        //base cases
        if(month==13){
            update();return;}
        //if(temp<0){return;}
 
 
        //choose surplus and go ahead
        temp+=s;
        months[month]=s;
        if(month>6&&(months[month]+months[month-1]+months[month-2]+months[month-3]+months[month-4]>0)){months[month]=0;
            temp-=s;return;}
//        System.out.println("Month="+month+" going for surplus");
        solve(s, d, month + 1);
        months[month]=0;
        temp-=s;
 
        //choose deficit and go ahead
        temp-=d;
        months[month]=-d;
        if(month>6&&(months[month]+months[month-1]+months[month-2]+months[month-3]+months[month-4]>0)){months[month]=0;
            temp+=d;return;}
//        System.out.println("Month="+month+" going for deficit");
        solve(s,d,month+1);
        months[month]=0;
        temp+=d;
    }
 
    public static void main(String args[]) throws Exception{
        Scanner sc = new Scanner(System.in);
        while(sc.hasNextLine()){
            String sa[] = sc.nextLine().split(" ");
            int s = Integer.parseInt(sa[0]);    int d = Integer.parseInt(sa[1]);
            total=0;temp=0;
            months = new int[13];
            solve(s,d,1);
            if(total>0){
                System.out.println(total);
            }else{
                System.out.println("Deficit");
            }
        }
    }
}
 

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