#include <bits/stdc++.h>
using namespace std;
int main(){
  cout << fixed << setprecision(7);
  long long a, b, c, d;
  cin >> a >> b >> c >> d;
  long long D = (a - c) * (a - c) - 4 * 2 * (b - d);
  if (D < 0){
    cout << "No" << endl;
  } else if (D == 0){
    cout << "Yes" << endl;
  } else {
    cout << (double) (a - c) / 2 << ' ' << (double) (b - d) / 2 << endl;
  }
}