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;
int gdc(int a, int b) {
  int temp;
  while (b != 0) {
    temp = a % b;
    a = b;
    b = temp;
  }
  return a;
}
int main() {
  int a, b, min;
  while (cin >> a >> b) {
    if (a < b) {
      a = a ^ b;
      b = a ^ b;
      a = a ^ b;
    }
    min = gdc(7 - a, 6);
    cout << a / min << "/" << 6 / min << endl;
  }
  return 0;
}
