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

#include <bits/stdc++.h>
#define Norman ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define int long long
#define endl "\n"
const int N = 1e5+20;
const int E = 1e6+20;
const int inf = 1e18;

using namespace std;

int ans, sum, cnt;
int a[N];
int Nr = 1;
//long long pref[N];
//map <> mp;
//set <> st;
//vector<> vr;
//pair<> pr;

main()
{
	Norman
    int n, m;
    cin >> n >> m;
    int mx = max(n, m);
    if(mx == 1){
    	cout << "1/1";
	}
	else if(mx == 2){
		cout << "5/6";
	}
	else if(mx == 3){
		cout << "1/3";
	}
	else if(mx == 4){
		cout << "1/2";
	}
	else if(mx == 5){
		cout << "1/5";
	}
	else if(mx == 6){
		cout << "1/6";
	}
}