from math import sqrt
a=open("test.txt")
def kv(a,b,c):
    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:
    b=line.split()
    for j in range (0,3,1):
        b[j] = float(b[j])
    kv(b[0],b[1],b[2])