a,b = map(int,input().split())
x = a//4
y = b//4

if x == 0:
    if y == 1:
        z = 2
    else:
        z = 1
elif x == 1:
    if y == 2:
        z = 0
    else:
        z = 2
else:
    if y == 0:
        z = 1
    else:
        z = 0
w = a%4
#print(z,w)
print(z*4+w)