#include <bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define MAXN 10000
#define MOD 100000

using namespace std;

typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
typedef long long ll;

int main(){
    int n;
    scanf("%d", &n);
    vi v(n);
    for(int i = 0; i < n; i++){
        scanf("%d", &v[i]);
    }
    sort(v.begin(), v.end());
    v.erase(unique(v.begin(),v.end()), v.end());
    for(int i = 0; i < v.size(); i++){
        printf("%d ", v[i]);
    }
    printf("\n");
    return 0;
}