def Main():
    x,y=map(int,input().split())
    if x in [0,4,8]:
        print(12-x-y)
    if x in [1,5,9]:
        print(15-x-y)
    if x in [2,6,10]:
        print(18-x-y)
    if x in [3,7,11]:
        print(21-x-y)
Main()