#include<iostream> #include<vector> #include<algorithm>

using namespace std;

const int N = 1e6+9;

int n,x;

vector<int> v;

int main() { cin>>n; for(int i=0;i<n;i++) { int x; cin>>x; v.push_back(x); }

sort(v.begin(),v.end());

v.erase(unique(v.begin(),v.end()),v.end());

for(int i=0;i<v.size();i++)
    cout<<v[i]<<" ";
cout<<endl;

return 0;

}