l = [int(x) for x in input().split()]

n = l[0]
m = l[1]

if n > m : y = n
else : y = m

a = 6 - y + 1

for i in range(1 , 3) :
  if n % i == 0 and m % i == 0 : b = i

print ( a // b , "/" , 6 // b )