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.*;
             
            public class sol
            {
             
                 public static void main(String []args){
                     Scanner scanner = new Scanner (System.in);
                     int a = scanner.nextInt();
                     int b= scanner.nextInt();
                     if(a>b)
                    print(7-a);
                     else
                     print(7-b);
                  
                 
                 }
                 
                 public static void print(int a)
                 {
                       if(a==1)
                       System.out.println(a+"/"+"6");
                      
                     
                     else if(a%2==0)
                     {
                         if(a==6)
                         System.out.println("1/1");
                         else
                         System.out.println(a/2+"/"+"3");
                     }
                     else if(a%3==0)
                     {
                      System.out.println(a/3+"/"+"2");
             
                     }
                     
                     
                     else
                     {
                      System.out.println(a+"/"+"6");
                 }
                 }
            }