include <bits/stdc++.h>

using namespace std; int n,a[1000006],i; int main() { cin>>n; for(i=1;i<=n;i++) cin>>a[i]; sort(a+1,a+n+1); for(i=1;i<=n;i++) if(a[i]!=a[i-1]) cout<<a[i]<<" "; }</p>