#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	int X, Y;
	cin >> X >> Y;
	vector<int> v;
	v.emplace_back(INF);
	for (int i = 0; i * i <= Y; ++i) v.emplace_back(i * i);
	map<int, int> mm;
	for (int i : v) for (int j : v) {
		if (i == 0 || j == 0) mm[i + j] += 2;
		else mm[i + j] += 4;
	}
	int ans = 0;
	for (auto [m, c] : mm) if (m >= X && m <= Y) chmax(ans, c);
	cout << ans << endl;
}