from collections import defaultdict

def main():
    X, Y = map(int, input().split())
    r = Y ** 0.5
    d = defaultdict(int)
    for i in range(int(-r),int(r)+1):
        for j in range(int(-r),int(r)+1):
            if i**2 + j**2 <= Y:
                d[i**2 + j**2] += 1

    ans = 0
    for i in range(X, Y + 1):
        ans = max(ans, d[i])

    print(ans)


if __name__ == "__main__":
    main()