#!/usr/bin/python
from math import *
a = input ("a:")
b = input ("b:")
c = input ("c:")
d=b*b-4*a*c
if d < 0:
    print "You are stupid! D<0!"
else:
    d=sqrt(d)
    x1=(-b+d)/2/a
    x2=(-b-d)/2/a
    if x1==x2:
        print "x=%s" %x
    else:
        print "x1=%s" %x1
        print "x2=%s" %x2