//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pp pair<int,int>
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define ld long double
#define al(a) (a).begin(),(a).end()
#define mk make_pair
#define check cout<<"?"<<endl;

ll MOD=1000000007;
ll mod=998244353;
int inf=1000001000;
ll INF=1e18+5;

int main(){
    cout<<fixed<<setprecision(20);
    ll a,b,c,d; cin>>a>>b>>c>>d;
    ll D=(a-c)*(a-c)-4*2*(b-d);
    if(D>0){
        ld x1,x2;
        x1=(sqrt(D)-(a-c))/4.0;
        x2=(-sqrt(D)-(a-c))/4.0;
        ld y1,y2;
        y1=x1*x1+a*x1+b;
        y2=x2*x2+a*x2+b;
        ld A=(y2-y1)/(x2-x1);
        cout<<A<<" "<<-A*x1+y1<<endl;
    }
    else if(D==0){
        cout<<"Yes"<<endl;
    }
    else{
        cout<<"No"<<endl;
    }
}