def f(x, y):
    c = 0
    for i in range(1, int(y**0.5)+1):
        for j in range(int(y**0.5)+1):
            d = i**2+j**2
            if (d >= x) and (d <= y):
                c += 1
            c = max(0, c)
    return (c * 4)

x, y = map(int, input().split())

if x ==y:
    print(f(x, y))

else:
    for i in range(x, y+1):
        z = 0
        z = max(z, f(i, i))
    print(z)