# include<iostream> using namespace std; int a[100001]; int main(){ int i,n; int b; cin>>n; for(i=0;i<n;i++){ cin>>b; a[b]++; } for(i=0;i<=100000;i++){ if(a[i]!=0){ cout<<i<<" "; a[i]=0; } } cout<<endl; return 0; }