/// Msaa el 5ra
#pragma GCC optimize("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,fma")

#include "bits/stdc++.h"

using namespace std;

#define pb push_back
#define F first
#define S second
#define f(i, a, b)  for(int i = a; i < b; i++)
#define all(a)  a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define sz(x) (int)(x).size()
#define mp(x, y) make_pair(x,y)
#define popCnt(x) (__builtin_popcountll(x))
#define int ll

using ll = long long;
using ii = pair<int, int>;
using ull = unsigned long long;

const int N = 5e5 + 5, LG = 18, MOD = 1e9 + 7;
const long double PI = acos(-1);
const long double EPS = 1e-7;
int cnt[3005];
int cnt2[3005];

void doWork() {

    int t, s;
    cin >> t >> s;
    ll ans1 = 1, ans2 = 1;
    ///(x*3/2)+md<=s
    for (int x = 1; x <= 1000000; x++) {
        if (x * 3 <= s * 2) {
            ans1 += 4;
            if (x * 2 <= t) {
                ans2 += 4;
            }
        };
        if (x <= s) {
            ans1 += 4;
            if (x <= t) {
                ans2 += 4;
            }
        }
        int lo = 0, hi = 1000000;
        while (lo < hi) {
            int md = lo + (hi - lo + 1) / 2;
            if (x * 3 + md * 2 <= s * 2)
                lo = md;
            else
                hi = md - 1;
        }
        int A = lo;
        ans1 += lo * 8;
        {
            int lo = 0, hi = A;
            while (lo < hi) {
                int md = lo + (hi - lo + 1) / 2;
                if (md + x * 2 <= t)
                    lo = md;
                else
                    hi = md - 1;
            }
            ans2 += lo * 8;
        }
    }
//    cout << ans1 << ' ' << ans2 << endl;

    int g = __gcd(ans1, ans2);
    ans1 /= g;
    ans2 /= g;
    if (ans2 == 1)cout << ans1 << '\n';
    else
        cout << ans2 << "/" << ans1 << '\n';

}

int32_t main() {
#ifdef ONLINE_JUDGE
    ios_base::sync_with_stdio(0);
    cin.tie(0);
#endif // ONLINE_JUDGE

    int t = 1;
//    cin >> t;
    while (t--) {
        doWork();
    }
}