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

"""  *** Author--Saket Saumya ***
            IIITM
"""
import math
import os
import random
import re
from  sys import stdin,stdout
from collections import Counter

def si():
	return str(input())
def ii():
    return int(input())
def mi():
    return map(int, input().split())
def li():
    return list(mi())

y,w=mi()
s=max(y,w)
if y!=w and (6-s)>0:

	ans=(6-s)+1
	if math.gcd(ans,6)==1:
		print(str(ans)+'/6')
	else:
		print('1/'+str(6//ans))
	
elif y!=w and (6-s)==0:
	print('0/1')	
elif y==w:
	print('1/1')
	
	
	
	
	
		
	
	
	
	
	
	
	
	
	
	
	
	
	
		









