#include <bits/stdc++.h>
using namespace std;

int main() {
  string S, T;
  cin >> S >> T;
  if (S != "Sat" && S != "Sun") {
    cout << "8/31" << "\n";
    return 0;
  }
  cout << "8/" << 31 + (S == "Sat" || S == "Sun") + (T == "Sat" || T == "Sun") << "\n";
}