a,b,c,d=map(int,input().split())
f1=lambda x:x**2+a*x+b
f2=lambda x:x**2+c*x+d
A,B,C=2,a-c,b-d
D=B**2-4*A*C
if D<0:
	print("No")
elif D==0:
	print("Yes")
else:
	x1=(-B-D**0.5)/(2*A)
	x2=(-B+D**0.5)/(2*A)
	print((f1(x1)-f1(x2))/(x1-x2),((f1(x1)-f1(x2))/(x1-x2))*(-x1)+f1(x1))