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

int main()
{
    std::vector<std::string> names;
    for (auto iter = names.begin(); iter != names.end(); ++iter) {
        std::cout << *iter << "\n";
    }
    for (std::vector<std::string>::iterator iter = names.begin();
         iter != names.end(); ++iter) {
        std::cout << *iter << "\n";
    }
}