from math import sqrt

def calcul_delta(a: float, b: float, c: float) -> float:
    return b**2 - 4*a*c

def calcul_racines(
        a: float, b: float, c: float
        ) -> tuple[float|None, float|None]:
    
    delta = calcul_delta(a, b, c)

    if delta < 0:
        return (None, None)
    elif delta == 0:
        return (-b / (2 * a), None)
    else:
        return (
            (-b - sqrt(delta)) / (2 * a),
            (-b + sqrt(delta)) / (2 * a)
        )

def main():
    valeurs = input()
    valeurs = map(float, valeurs.split(" "))

    racines = calcul_racines(*valeurs)

    print(f"Les racines sont {racines}")


if __name__ == "__main__":
    main()