spoilerimport numpy as np
import math
import matplotlib.pyplot as plt
b =float(input())
a =float(input())
x0 = -b/2*a
c= float(input())
y0 = a*pow(x0,2) + b*x0 + c
print(x0,y0)
print(y0)
fig, ax = plt.subplots()
x = np.linspace(x0,y0)
y= (a*pow(x,2))+(b*x)+(c)
print(x,y)
ax.plot(x,y)
print(x,y)
plt.show()