p0=[0,4,8]
p1=[1,5,9]
p2=[2,6,10]
p3=[3,7,11]
x,y=map(int,input().split())
if x%4==0:
    for a in p0:
        if not a==x or a==y:
            print(a)
elif x%4==1:
    for a in p1:
        if not a==x or a==y:
            print(a)
elif x%4==2:
    for a in p2:
        if not a==x or a==y:
            print(a)
else:
    for a in p3:
        if not a==x or a==y:
            print(a)