X, Y = map(int, input().split())

ps = [0] * (Y+1)
rmax = 1
while (rmax+1) ** 2 <= Y:
    rmax += 1

for x in range(1, rmax+1):
    for y in range(rmax+1):
        k = x*x + y*y
        if k <= Y:
            ps[k] += 1

ans = max(ps[X:Y+1]) * 4
print(ans)