a,b,c,d = map(int,input().split())
#2*x**2+(a-c)*x+b-d = 0
D = (a-c)**2-4*2*(b-d)
if D < 0:
    print('No')
elif D == 0:
    print('Yes')
else:
    x1 = (-(a-c)+((a-c)**2-4*2*(b-d))**(1/2))/4
    x2 = (-(a-c)-((a-c)**2-4*2*(b-d))**(1/2))/4
    y1 = x1**2+a*x1+b
    y2 = x2**2+a*x2+b
    p = (y2-y1)/(x2-x1)
    q = y2-x2*p
    print(p,q)