# -*- coding: utf-8 -*-
"""
Created on Thu Sep 21 11:10:11 2017

@author: vmahout
"""

import math


a= int(input('Valeur de a :'))
b= int(input('Valeur de b :'))
c= int(input('Valeur de c :'))

Det = (b**2)-4*a*c
V1 = (-b-math.sqrt(Det))/2
V2 = (-b+math.sqrt(Det))/2

print('Les deux racines valent respectivement {0:.2f} et {1:.2f}'.format(V1,V2))