a,b = map(int,input().split())
x = a//4
y = b//4
#if x%4 != 0:
#    x -= 1
#    y -= 1
if x == 0:
    if y == 1:
        z = 2
    else:
        z = 1
elif x == 1:
    if y == 2:
        z = 0
    else:
        z = 1
else:
    if y == 0:
        z = 1
    else:
        z = 0
w = a%4
#print(z,w)
print(z*4+w)