#include <bits/stdc++.h>
#define rep(i, ss, ee) for (int i = ss; i < ee; ++i)
using namespace std;

void solve() {
  int ans = 31;
  string s;
  rep(i, 0, 2) {
    cin >> s;
    if (s == "Sun" or s == "Sat") ans++;
  }
  cout << "8/" << ans << endl;
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  solve();
  getchar();
}