6 6
 1 4
 4 4
 3 3
 6 4
 6 3
 5 4
 5 6
 3 4
 1 3
 3 2
 5 5
 1 1
 2 1
 3 1
 3 5
 1 6
 6 5
 2 3
 4 3
 2 2
 3 6
 1 2
 6 1
 2 5
 4 5
 1 5
 6 2
 4 6
 5 1
 4 1
 5 2
 2 4
 2 6
 5 3

1/6
 1/2
 1/2
 2/3
 1/6
 1/6
 1/3
 1/6
 1/2
 2/3
 2/3
 1/3
 1/1
 5/6
 2/3
 1/3
 1/6
 1/6
 2/3
 1/2
 5/6
 1/6
 5/6
 1/6
 1/3
 1/3
 1/3
 1/6
 1/6
 1/3
 1/2
 1/3
 1/2
 1/6
 1/3

#include <bits/stdc++.h>
using namespace std;
signed main() {
  long long t = 1;
  while (t--) {
    long long a, b, s;
    cin >> a >> b;
    s = 6 - max(a, b) + 1;
    switch (s) {
      case 1:
        cout << 1 << '/' << 6;
        break;
      case 2:
        cout << 1 << "/" << 3;
        break;
      case 3:
        cout << 1 << '/' << 2;
        break;
      case 4:
        cout << 2 << "/" << 3;
        break;
      case 5:
        cout << 5 << '/' << 6;
        break;
      case 6:
        cout << 1 << "/" << 1;
        break;
    }
  }
  return 0;
}
