from bisect import *
from collections import defaultdict
dic = defaultdict(int)
X,Y = map(int,input().split())
r = int(Y ** 0.5) + 1
for i in range(r):
    for j in range(1,r):
        dic[i**2 + j**2] += 1
KV = list(dic.items())
KV.sort()
K = []
V = []
for k,v in KV:
    K.append(k)
    V.append(v)
x = bisect_left(K,X)
y = bisect(K,Y)
if x == y:
    print(0)
else:
    print(max(V[x:y]) * 4)