#include <bits/stdc++.h>
#include <iomanip>
using namespace std;
#define reps(i,s,n) for(int i = s; i < n; i++)
#define rep(i,n) reps(i,0,n)
#define Rreps(i,n,e) for(int i = n - 1; i >= e; --i)
#define Rrep(i,n) Rreps(i,n,0)
#define ALL(a) a.begin(), a.end()
#define fi first
#define se second
typedef long long ll;
typedef vector<ll> vec;
typedef vector<vec> mat;

ll N,M,H,W,Q,K,A,B;
string S;
const ll MOD = 998244353;
//const ll MOD = (1e+9) + 7;
typedef pair<ll, ll> P;
const ll INF = (1LL<<62);

int main() {
    ll a, b, c, d;
    cin>>a>>b>>c>>d;
    ll ju = (a - c) * (a - c) - 8LL * (b - d);
    if(ju <= 0){
        cout<<(ju == 0 ? "Yes" : "No")<<endl;
    }else{
        long double p = a + c, q = b + d;
        p /= 2;
        q /= 2;
        cout<<fixed<<setprecision(10)<<p<<' '<<q<<endl;
    }
}