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>
int main() {
  int a, b, n, p = 6;
  scanf("%d %d", &a, &b);
  if (a >= b)
    n = 7 - a;
  else
    n = 7 - b;
  if (n == 2) {
    n = 1;
    p = 3;
  } else if (n == 3) {
    n = 1;
    p = 2;
  } else if (n == 4) {
    n = 2;
    p = 3;
  } else if (n == 6) {
    n = 1;
    p = 1;
  }
  printf("%d/%d\n", n, p);
}
