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

Y,W =input().split(" ")
if int(Y)<=6 and int(Y)>=0 and int(W)<=6 and int(W)>=0:

    D=6
    N=6
    if Y>=W:
        for i in range(0,int(Y)-1):
            D=D-1
        if D==1:
            print("1/6")
        elif D==2:
            print("1/3")
        elif D==3:
            print("1/2")
        elif D==4:
            print("2/3")
        elif D==5:
            print("5/6")
        elif D==6:
            print("1/1")

    elif Y<W:
        for i in range(0,int(W)-1):
            D=D-1
        if D==1:
            print("1/6")
        elif D==2:
            print("1/3")
        elif D==3:
            print("1/2")
        elif D==4:
            print("2/3")
        elif D==5:
            print("5/6")
        elif D==6:
            print("1/1")
        
