#include <bits/stdc++.h>
using namespace std;
using uint = unsigned int;
using lint = long long int;
using ulint = unsigned long long int;
template<class T = int> using V = vector<T>;
template<class T = int> using VV = V< V<T> >;
template<class T, class U> void assign(V<T>& v, int n, const U& a) { v.assign(n, a); }
template<class T, class... Args> void assign(V<T>& v, int n, const Args&... args) { v.resize(n); for (auto&& e : v) assign(e, args...); }


int main() {
  cin.tie(nullptr); ios_base::sync_with_stdio(false);
  int x, y; cin >> x >> y;
  int N = 1e7;
  V<> a(N + 1);
  for (int i = 1; i < 3200; ++i) for (int j = 0; j < 3200; ++j) if (i * i + j * j <= N) {
    ++a[i * i + j * j];
  }
  int res = 0;
  for (int i = x; i <= y; ++i) {
    res = max(res, a[i]);
  }
  cout << 4 * res << '\n';
}