#include<bits/stdc++.h> using namespace std; using ll = long long; 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<<"Yes"<<endl; } else if(D<0) { cout<<"No"<<endl; } else { double e,f; e = (-a+c + sqrt(D))/4.0; f = (-a+c - sqrt(D))/4.0; double ey = e*e+a*e+b; double fy = f*f+a*f+b; printf("%.10lf %.10lf\n",(ey-fy)/(e-f),(ey-fy)/(e-f)*(-e)+ey); } }