#include <bits/stdc++.h>
using namespace std;
string str;
set<string> vis;
int main() {
  int n;
  scanf("%d", &n);
  vis.clear();
  for (int i = 0; i < n; ++i) {
    cin >> str;
    if (vis.find(str) != vis.end())
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
    vis.insert(str);
  }
  return 0;
}
