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

from fractions import Fraction

class a:
    
    def __init__(self):       
        
        self.b,self.c = map(int,raw_input().split())
    
    def d(self):        
        
        if 1 <= self.b <=6 and 1 <=self.c<= 6:   
            e = max(self.b,self.c)      
            e = ( 6 - e ) + 1             
            g = Fraction ( e , 6 )  
            
            if g == 1:
                print '%d/%d' % ( g , g )       
            
            else:
                print g  
                        
if __name__ == '__main__':
    f = a ()
    f . d ()
