a,b,c,d = map(int, input().split())

D = (a-c)**2-8*(b-d)
if D < 0:
    print("No")
elif D == 0:
    print("Yes")
else:
    x1 = (c-a+D**0.5)/4
    y1 = x1**2+a*x1+b
    x2 = (c-a-D**0.5)/4
    y2 = x2**2+a*x2+b
    p = (y1-y2)/(x1-x2)
    q = y1-p*x1
    print(p, q)