#include <iostream>
using namespace std;

int main() {
  int x, y;
  cin >> x >> y;
  int res;
  int sqr = x * x + y * y; 
  for (int i = 0; i < 150000; ++i) {
    double tmp = i * i / 4.0;
    if (tmp > sqr) {
      res = i;
      break;
    }
  }
  cout << res << endl;
}