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

#! /usr/bin/env python3

import re
import sys

def main():
    solve()

HIGH_TO_PROB = {
    1: (1, 1),
    2: (5, 6),
    3: (2, 3),
    4: (1, 2),
    5: (1, 3),
    6: (1, 6)
}

def solve():
    data = sys.stdin.readlines()
    yakko, wakko = sorted(parse(data))
    num, denom = calc_result(yakko, wakko)
    output = '%d/%d' % calc_result(yakko, wakko)
    print(output)


def parse(data):
    return tuple(int(s) for s in data[0].split())

def calc_result(yakko, wakko):
    _, high = sorted((yakko, wakko))
    return HIGH_TO_PROB[high]


if __name__ == '__main__':
    main()
