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 main() {
  int a, b;
  cin >> a >> b;
  if (a == b) {
    a = 1;
    b = 1;
  }
  if (a % 2 == 0 && b % 2 == 0) {
    a /= 2;
    b /= 2;
  }
  if (a % b == 0) {
    a /= b;
    b /= b;
  }
  if (b > a) {
    b = 6 - (b - a);
    a = 6;
    if (a == b) {
      a = 1;
      b = 1;
    }
    if (a % 2 == 0 && b % 2 == 0) {
      a /= 2;
      b /= 2;
    }
    if (a % b == 0) {
      a /= b;
      b /= b;
    }
  }
  cout << b << "/" << a;
}
