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>
using namespace std;
#define ll long long
#define pb push_back
#define modu 100000007
#define gcd __gcd
#define FAST() ios::sync_with_stdio(0);cin.tie(0)
ll int  t,n;
void solve()
{
    ll int  d=max(t,n);
    ll int p=6;
    d=(p-d)+1;
    d=p-d;
    if(d==0)
    {
        cout<<0<<"/"<<1<<endl;
        return ;
    }
    if(p%d==0)
    {
        ll int f=gcd(p,d);
        cout<<(d/f)<<"/"<<(p/f)<<endl;
    }
    else
        cout<<d<<"/"<<6<<endl;
}

int  main()
{
    FAST();

    cin>>t>>n;
        solve();

}
