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

int main() {
  string s1, s2;
  cin >> s1 >> s2;
  if (s1[0] == 'S' && s2[0] == 'S') {
    cout << "8/33" << endl;
  }
  else if (s1[0] == 'S') {
    cout << "8/32" << endl;
  }
  else {
    cout << "8/31" << endl;
  }
  return 0;
}