//#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
//using namespace atcoder;
using ll = long long;
#define all(A) A.begin(),A.end()
using vll = vector<ll>;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
using Graph = vector<vector<ll>>;
Graph G;
vll dist;
vector<bool> seen;
set<pair<ll, ll>> S;

ll gcd(ll(a), ll(b)) {
	ll c = a;
	while (a % b != 0) {
		c = a % b;
		a = b;
		b = c;
	}
	return b;
}

int main() {
	ll A,B,C,D;
	cin>>A>>B>>C>>D;
	if((A-C)*(A-C)-8*(B-D)<0){
		cout<<"No"<<endl;
	}
	else if((A-C)*(A-C)-8*(B-D)<0){
		cout<<"Yes"<<endl;
	}
	else{
		cout<<double(A+C)/2.0<<" "<<double(B+D)/2.0<<endl;
	}

}