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


numbers = input().split()

leftNum = int(numbers[0])

rightNum = int(numbers[1])

diceNumbers = [1, 2, 3 , 4, 5, 6]

remainingNumbers = [1, 2, 3 , 4, 5, 6]

print(diceNumbers)
print(remainingNumbers)

for index in range(len(diceNumbers)):

    element = diceNumbers[index]

    if element < leftNum or element < rightNum:
        remainingNumbers.remove(element)

number = (len(remainingNumbers)/len(diceNumbers)).as_integer_ratio()

print(str(number[0]) + "/" + str(number[1]))

			 	  					  	 	 			 	 		 		