#include <bits/stdc++.h>
int main() {
    int p = 0, q = 0;
    for (int i = 1; i <= 52; i++) {
        for (int j = 1; j <= 52; j++) {
            if (i == j) { continue; }
            for (int k = 1; k <= 52; k++) {
                if (k == i || k == j) { continue; }
                for (int t = 1; t <= 52; t++) {
                    if (t == i || t == j || t == k) { continue; }
                    for (int l = 1; l <= 52; l++) {
                        if (l == t || l == k || l == i || l == j) { continue; }
                        int res = !(i % 13)+!(j % 13)+!(k % 13)+!(t % 13)+!(l % 13);
                        p += res;
                        q++;
                    }
                }
            }
        }
    }
    std::cout << "answer for 5 cards is "
        << p / std::__gcd(p,q) << "/" 
        << q / std::__gcd(p,q) << std::endl;
    return 0;
}