# coding: utf-8

d1, d2 = map(int,input().split())

r = d1**0.5
d = (d2/2)**0.5
d_ = d2**0.5
if r < d:
    ans = 0
elif r == d:
    ans = 4
elif d < r < d_:
    ans = 8
elif r == d_:
    ans = 4
else:
    ans = 0
print(ans)