X,Y = map(int,input().split())
arr = []
a = 1
while a*a <= Y:
    arr.append(a*a)
    a += 1

def is_square(n):
    return n**0.5 == int(n**0.5)

def calc(n):
    ret = 0
    for a in arr:
        if n-a <= 0: break
        if is_square(n-a):
            ret += 1
    if is_square(n):
        ret += 1
    return ret * 4

ans = 0
for n in range(max(X,Y-5000),Y+1):
    ans = max(ans, calc(n))
print(ans)