#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main()
{
    double a, b, c, d;
    cin >> a >> b >> c >> d;
    ll D = pow(a - c, 2) - 8*(b - d);
    if(D < 0){
        cout << "No" << endl;
    }
    else if(D == 0){
        cout << "Yes" << endl;
    }
    else{
        cout << (a + c)/2 << " " << (b + d)/2 << endl;
    }
    return 0;
}