N = 10**7
x,y = map(int,input().split())
D = {}
for i in range(1,N+1):
    if i*i>N:break
    for j in range(1,N+1):
        if j*j>N:break
        if x<=i*i+j*j<=y:
            D[i*i+j*j] = D.get(i*i+j*j,0)+1
for i in range(1,N+1):
    if i*i>N:break
    if x<=i*i<=y:
        D[i*i] = D.get(i*i,0)+1
ans = 0
for a in D:
    ans = max(ans,D[a])
print(4*ans)