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 dice{
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);

int a=scan.nextInt();
int b=scan.nextInt();

int highest=0;
if(a<b)
	highest=b;
else
	highest=a;

if(((6-(highest-1))%6)==0)
	System.out.printf("%d/1",highest);
else if(((6-(highest-1))%3)==0)
	System.out.printf("%d/2",(6-(highest-1))/3);
else if(((6-(highest-1))%2)==0)
	System.out.printf("%d/3",(6-(highest-1))/2);
else
	System.out.printf("%d/6",(6-(highest-1)));

}
}
