a,b,c,d=map(int,input().split())
def f(x):
    return x**2+a*x+b
D=(a-c)**2-8*(b-d)
if D<0:
    print('No')
elif D==0:
    print('Yes')
else:
    x1,x2=(c-a+D**0.5)/4,(c-a-D**0.5)/4
    y1,y2=f(x1),f(x2)
    p=(y1-y2)/(x1-x2)
    q=-p*x2+y2
    print(p,q)