from collections import defaultdict

Sq = [i**2 for i in range(3201)]
PointCounter = defaultdict(int)
for i in range(3201):
    for j in range(i, 3201):
        if Sq[i] + Sq[j] > 10**7:
            break
        if i == j:
            if i == 0:
                continue
            else:
                PointCounter[Sq[i] + Sq[j]] += 4
        else:
            if i == 0:
                PointCounter[Sq[j]] += 4
            else:
                PointCounter[Sq[i] + Sq[j]] += 8

x, y = map(int, input().split())
ans = 0
for i in range(x, y + 1):
    ans = max(ans, PointCounter[i])
print(ans)