Contest1421/F.cpp

#include<bits/stdc++.h>
using namespace std;
int main() {
    int n ;
    cin >> n;
    int *a = new int[n];
    for(int i = 0; i < n; i++) {
        cin >> a[i];
    }
    sort(a, a + n);
    int k = unique(a, a + n) - a;
    for(int i = 0; i < k; i++) {
        cout << a[i] << endl;
    }
    delete[]a;
    return 0;
}