from math import sqrt
a = int(input("a : "))
b = int(input("b : "))
c = int(input("c : "))

delta = (( b - a ) ** 2) - (4 * (c - 3))

if delta < 0 :
    print("pas d'inté")
elif delta == 0 :
    x = (-1 * (b - a)) / 2
    y = a * x + 3
    print("1 inté x :", x, " y :", y)
else :
    x1 = (-1 * (b - a) - sqrt(delta)) / 2
    x2 = (-1 * (b - a) + sqrt(delta)) / 2

    y1 = (a * x1) + 3
    y2 = (a * x2) + 3
    print("2 inté : x1 :", x1, " y1 :", y1, " x2 :", x2, " y2 :", y2)