import math

A, B = map(int, input().split())
A = math.sqrt(A)
B = math.sqrt(B)


X = math.sqrt(pow(math.sqrt(B), 2) - pow(math.sqrt(B) / 2, 2))

if A < X:
    print(0)
elif A == X:
    print(4)
elif A < B:
    print(8)
elif A == B:
    print(4)
else:
    print(0)