D1,D2=map(int, input().split())
r=(D1)**(1/2)
l=(D2)**(1/2)
s=l/2
if r < l:
    if s > r:
        print("0")
    elif r == s:
        print("4")
    else:
        print("8")
elif r == l:
    print("4")
else:
    print("0")