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;

/**
 *
 * @author Mohammed Elkady
 */
public class Good {

    /**
     * @param args the command line arguments
     * @param String
     */
     public static void main(String[] args) {
      Scanner S;  
        S=new Scanner(System.in);
        double y=S.nextInt();
        double w=S.nextInt();
        int v=1;
        double c = 0,b=0;
        double x =1-((Math.max(y, w)-1)/6);
            while(v<=6)
            {for(int i=1;i<=6;i++)        
                {if(x*v==i)
                {c=i;
                b=v;
                i=6;
                v=6;}}
                v++;}
                if (y==6||w==6)
                {System.out.println("1/6");}
                else
                 {System.out.println((int)c+"/"+(int)b);}}
    
}
