#include <bits/stdc++.h>
using namespace std;
using PP = pair<long, long>;
const int INF = 1e9;
template <class T> T Next() { T t; cin >> t; return t; }

int a[10000001];
int main() {
  for (int i = 0; i < 3200; ++i) {
    for (int j = 1; j < 3200; ++j) {
      int k = i * i + j * j;
      if (k > 10000000) continue;
      ++a[k];
    }
  }
  
  int x, y;
  cin >> x >> y;
  int mx = 0;
  for (int i = x; i <= y; ++i) {
    mx = max(mx, a[i]);
  }
  cout << 4 * mx << endl;
}