#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    cin >> n;
    set<int> s;
    for (int i = 0; i < n; i++)
    {
        int x;
        cin >> x;
        s.insert(x);
    }
    for (const auto &ele : s)
    {
        cout << ele << " ";
    }
    return 0;
}