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 YakkoDot {
public static void main(String args[]){
		
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int m = sc.nextInt();
		
		
		int s1=6-(n-1);
		int s2=6-(m-1);
		int g=6;
		
	
		
		
		if(n>m){
			
			int o=s1;
			int g1=6;
			for(int i=1;i<n;i++){
				if(s1%i==0 && g%i==0){
				s1=o/i;
				g=g1/i;}
				
				//else System.out.println(s1+"/"+g);
					
			}
			System.out.println(s1+"/"+g);	
		}
		
			
			
		
		if(n<m){
			
			int o=s2;
			int g1=6;
			for(int i=1;i<m;i++){
				if(s2%i==0 && g%i==0){
				s2=o/i;
				g=g1/i;}
				
				//else System.out.println(s1+"/"+g);
					
			}
			System.out.println(s2+"/"+g);	
		}
		
		if(m==1 && n==1){
			System.out.println(1+"/"+1);
			
		}
		if(n==m){
			System.out.println(n/m);
			
		}
		
			
			
			
		}
		
}

