/* -*- coding: utf-8 -*-
 *
 * 1064.cc:  No.1064 ∪∩∩ / Cup Cap Cap - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

/* main */

int main() {
  ll a, b, c, d;
  scanf("%lld%lld%lld%lld", &a, &b, &c, &d);

  /*
    y = x^2+ax+b = -x^2+cx+d
    (1) -> 2x^2+(a-c)x+(b-d) = 0
    (2) -> 2y = (a+c)x+(b+d) -> y = (a+c)/2x+(b+d)/2
   */

  ll e = (a - c) * (a - c) - 4 * 2 * (b - d);

  if (e < 0) puts("No");
  else if (e == 0) puts("Yes");
  else {
    double p = (a + c) * 0.5, q = (b + d) * 0.5;
    printf("%.10lf %.10lf\n", p, q);
  }
  return 0;
}