from math import *

def f(x):
    return x ** 2 + a * x + b

a, b, c, d = map(int, input().split())
D = (a - c) ** 2 - 8 * (b - d)
if D < 0:
    print("No")
    exit()
if D == 0:
    print("Yes")
    exit()
    
x1 = (-(a - c) + sqrt(D))/4
x2 = (-(a - c) - sqrt(D))/4
y1 = f(x1)
y2 = f(x2)
p = (y2 - y1)/(x2 - x1)
q = y1 - p * x1
print(p, q)