# Problem U+1F4A0

import math

# input
D_1, D_2 = map(int, input().split())

# initialization
h = math.sqrt(D_2 / 2)

if math.sqrt(D_1)>h and math.sqrt(D_1)<math.sqrt(D_2):
    print(8)
elif math.sqrt(D_1)==h or math.sqrt(D_1)==math.sqrt(D_2):
    print(4)
else:
    print(0)