#include<iostream>
#include<string>
#include<iomanip>
#include<cmath>
#include<vector>
#include<algorithm>
#include<utility>

using namespace std;

#define int long long
#define endl "\n"

constexpr long long INF = (long long)1e18;
constexpr long long MOD = 1'000'000'007; 

struct fast_io {
	fast_io(){
		std::cin.tie(nullptr);
		std::ios::sync_with_stdio(false);
	};
} fio;

signed main(){
	cout<<fixed<<setprecision(10);
	
	int a, b, c, d;
	int A, B, C;
	
	cin>>a>>b>>c>>d;
	
	A = 2;
	B = a - c;
	C = b - d;
	
	if(B * B - 4 * A * C < 0) {
		cout<<"No"<<endl;
	} else if(B * B - 4 * A * C == 0) {
		cout<<"Yes"<<endl;
	} else {
		long double Dx, Ex;
		long double Dy, Ey;
		long double p, q;
		
		Dx = (-B + sqrt(B * B - 4 * A * C)) / (2.0 * A);
		Ex = (-B - sqrt(B * B - 4 * A * C)) / (2.0 * A);
		
		Dy = Dx * Dx + a * Dx + b;
		Ey = Ex * Ex + a * Ex + b;
		
		
		p = (Dy - Ey) / (Dx - Ex);
		
		q = Dy - p * Dx;
		
		cout<<p<<" "<<q<<endl;
		
	}
	
	return 0;
}