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) {
        int num1,num2;
        Scanner input=new Scanner(System.in);
        num1=input.nextInt();
        num2=input.nextInt();
        int num3=1;
        if(num1>=num2){
            num3+=6-num1;
        }
        else if (num2>num1){
            num3+=6-num2;
        }
        if(num3==4)
        System.out.println(num3/2+"/"+num3/2);
        else if (num3==5)
        System.out.println(num3+"/"+6);
        else
        System.out.println(num3/num3+"/"+6/num3);
    }
}
