6 6
 1 4
 4 4
 3 3
 6 4
 6 3
 5 4
 5 6
 3 4
 1 3
 3 2
 5 5
 1 1
 2 1
 3 1
 3 5
 1 6
 6 5
 2 3
 4 3
 2 2
 3 6
 1 2
 6 1
 2 5
 4 5
 1 5
 6 2
 4 6
 5 1
 4 1
 5 2
 2 4
 2 6
 5 3

1/6
 1/2
 1/2
 2/3
 1/6
 1/6
 1/3
 1/6
 1/2
 2/3
 2/3
 1/3
 1/1
 5/6
 2/3
 1/3
 1/6
 1/6
 2/3
 1/2
 5/6
 1/6
 5/6
 1/6
 1/3
 1/3
 1/3
 1/6
 1/6
 1/3
 1/2
 1/3
 1/2
 1/6
 1/3

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        Task solver = new Task();
        solver.dieRoll(scan.nextInt(), scan.nextInt());
    }

    static class Task {

        static void dieRoll(int y, int w){
            int max;
            if(y>=w) max = y;
            else max = w;
            int val = 6-max+1;
            int nem,den;
            if(6%val == 0) {
                den=6/val;
                nem=1;
            } else {
                den=6;
                nem=val;
            }
            System.out.println(nem + "/" + den);
        }

    }
}

