from math import sqrt
a=open("test.txt")
def kv(BLIST):
    a=BLIST[0]
    b=BLIST[1]
    c=BLIST[2]
    d=b*b-4*a*c
    if (d<0):
        print "d<0"
        return
    x1=(-b+sqrt(d))/(2*a)
    x2=(-b-sqrt(d))/(2*a)
    if (d==0):
        x1=-b/(2*a)
        print x1
        return
    print  x1,x2
for line in a:
    mas=line.split()
    for j in range (0,3,1):
        mas[j] = float(mas[j])
    kv(mas)