#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;

int main(){
    ll a,b,c,d;
    cin >> a >> b>> c >>d;
    ll D = (a-c)*(a-c) - 8 * (b-d);
    if(D < 0) cout << "No" << endl;
    else if(D ==0) cout << "Yes" << endl;
    else cout << setprecision(20) << (a+c)/2.0 << " "<< (b+d)/2.0 << endl;
    return 0;
}