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

options = []

line = raw_input()
inputs = [int(i) for i in line.split()]

if inputs[0] >= inputs[1]:
    options.append(inputs[0])
else:
    options.append(inputs[1])

for i in range(options[0]+1,7):
    options.append(i)

num = int(len(options))
den = int(6)

b = 2
while(b<=num):
    if den % b == 0 and num % b == 0:
        num = num / b
        den = den / b
    else:
		b+=1

print str(num) +'/'+ str(den)
