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 dieRoll {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int num1 = input.nextInt();
		int num2 = input.nextInt();
		input.close();
		int num3 = (int) Math.max(num1, num2);
		if (num3 == 6) {
			System.out.println("1 / 6");
			return;
		}
		if (num3 == 1) {
			System.out.println("1 / 1");
			return;
		}
		int num4 = 6 - num3 + 1;
		int num5 = gcf(6, num4);
		System.out.println(num4/num5 +" / " +6/num5);
	}

	public static int gcf(int x, int y) {
		int gcf = 1;
		int target = 1;
		while (gcf <= x && gcf <= y) {
			if (x % gcf == 0 && y % gcf == 0) {
				target = gcf;
			}
			gcf++;
		}
		return target;
	}

}
