#!/usr/local/bin/python
# -*- coding: utf-8 -*-

import os
n = input("Sisesta polünoomi aste: ")
if (n != int(n))or(n<=0):
    print "Viga: Polünoomi aste peab olema naturaalarv."
    os._exit(1)
print "Sisesta polünoomi (täisarvulised) kordajad"
a = []
for i in range(n+1):
    a.append(input("x^" + str(n-i) + " kordaja: "))
    if a[i] != int(a[i]):
        print "Viga: Sisestati murdarv."
        os._exit(1)
    if a[0] == 0:
        print "Viga: Pealiikme kordaja peab nullist erinema."
        os._exit(1)
print "Sisestasid polünoomi " + str(a[0]) + "*x^" + str(n),
for i in range (1,len(a)):
    print " + " + str(a[i]) + "*x^" + str(n-i),
print

print ""
print "Polünoomi ratsionaalsed nullkohad on"
arv1=0
nullkohad=[]
for i in range(abs(a[n])*2+1):
    if (a[n]!=0):
        lugeja=-abs(a[n])+i
    else:
        for u in range(len(a)):
            if (arv1==0):
                arv1=a[n-u]
                lugeja=-abs(arv1)+i
    for v in range(a[0]):
        nimetaja=abs(a[0]-v)
        x=float(lugeja)/nimetaja
        y=0
        for j in range(len(a)):
            arv=a[j]*(x**(n-j))
            y+=arv
        if ((y==0) and (x in nullkohad)==False):
            nullkohad.append(x)
            print x
if (len(nullkohad)==0):
    print "-"