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 gnum(int, int);
int gnum(int a, int b) {
  if (a >= b)
    return a;
  else
    return b;
}
int main() {
  int num1, num2, num;
  cin >> num1 >> num2;
  num = gnum(num1, num2);
  switch (num1) {
    case 1:
      cout << 1 << "/" << 1;
      break;
    case 2:
      cout << 5 << "/" << 6;
      break;
    case 3:
      cout << 2 << "/" << 3;
      break;
    case 4:
      cout << 1 << "/" << 2;
      break;
    case 5:
      cout << 1 << "/" << 3;
      break;
    case 6:
      cout << 1 << "/" << 6;
      break;
  }
}
