#yuki1064
import math
EPS=1e-18
a,b,c,d=map(float,input().split())
dis=(a-c)**2-8*(b-d)
if dis<0:
 print('No')
 exit()
if -EPS<dis and dis<EPS:
 print('Yes')
 exit()
x1=(-(a-c)-math.sqrt(dis))/4
x2=(-(a-c)+math.sqrt(dis))/4
y1=x1**2+a*x1+b
y2=x2**2+a*x2+b
p=(y2-y1)/(x2-x1)
q=y1-p*x1
print('{:.06f}'.format(p),'{:.06f}'.format(q))