/*
 * iterators-02.cc    Standard Library, Iterators, exercise 2.
 */
#include <iostream>
#include <fstream>
#include <iterator>
using namespace std;

int main()
{
   istream_iterator<int> input(cin);
   istream_iterator<int> end;

   ofstream              file_even("even.txt");
   ostream_iterator<int> output_even(file_even, " ");

   ofstream              file_odd("odd.txt");
   ostream_iterator<int> output_odd(file_odd, " ");

   while(input != end)
   {
      if (*input % 2 == 0)
	 output_even = *input++;
      else
	 output_odd = *input++;
   }

   return 0;
}