#include <iostream>
#include <fstream>
using namespace std;
int main()
{
int numar, numere[100] = {0};
ifstream file_in("date.in");
ofstream file_out("date.out");
while(file_in >> numar)
{
numere[numar] = 1;
}
for(int i = 1; i <= 99; i += 2)
if(numere[i])
file_out << i << " ";
file_out << endl;
for(int i = 98; i >= 0; i -= 2)
if(numere[i])
file_out << i << " ";
file_out << endl;
file_in.close();
file_out.close();
return 0;
}