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:
    def f(x):
        return x**2+a*x+b
    x1 = (c-a-D**0.5)/4
    x2 = (c-a+D**0.5)/4
    p = (f(x2)-f(x1))/(x2-x1)
    q = (x2*f(x1)-x1*f(x2))/(x2-x1)
    print(p,q)