#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <stack>
#include <cmath>
#include <queue>
#include <numeric>


int main()
{
	int n;
	std::string s;

	std::cin >> n;

	for (size_t i = 0; i < n; i++)
	{
		std::cin >> s;
		std::cout << s;
	}

	return 0;
}