#include <bits/stdc++.h> #define int long long using namespace std; signed main() { int h, m; scanf("%lld %lld", &h, &m); int fz = 1, fm = 1; int rh = h; h = min(h, m); // (m + (m - h + 1)) * h / 2 fz = (m + (m - h + 1)) * h, fm = 2; fm *= rh * m; int g = __gcd(fz, fm); fz /= g, fm /= g; printf("%lld/%lld", fz, fm); return 0; }