04. Record Unique Names

#include <iostream>
#include <string>
#include <vector>

using namespace std;

bool isfound(vector<string> v, string s) {
    for (size_t i = 0; i < v.size(); i++) {
        if (v[i] == s) {
            return true;
        }
    }
    return false;
}

int main() {
    int n;
    cin >> n;

    vector<string> names;

    string name;

    for (int i = 0; i < n; i++) {
        cin >> name;
        if (!isfound(names, name)) {
            names.push_back(name);
        }
    }

    for (auto& name : names) {
        cout << name << endl;
    }

    return 0;
}