#include<iostream> using namespace std; int cnt; string a[100005]; signed main() { int n; 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; }