#include<bits/stdc++.h> using namespace std; int n; int cnt; string a[100001]; signed main(){ cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; } sort(a+1,a+n+1); for(int i=1;i<=n;i++){ if(a[i]==a[i-1]) continue; cout<<a[i]<<endl; } return 0; }