X, Y = map(int, input().split())
cnt = [0] * (10000001)
maxR = 0
while maxR * maxR <= Y:
    maxR += 1
maxR -= 1
for x in range(1, maxR + 1):
    for y in range(maxR + 1):
        if x * x + y * y <= Y:
            cnt[x * x + y * y] += 1

ans = 0
for i in range(X, Y + 1):
    if ans < cnt[i]:
        ans = cnt[i]
print(ans * 4)