#include <iostream>
#include <cmath>
#include <vector>
using namespace std;
int main()
{
	int n;
	cin >> n;
	vector <int> Vector_aleshe_ban;
	Vector_aleshe_ban.reserve(n);
	int number;
	for (int i = 0; i < Vector_aleshe_ban.size(); i++)
	{
		cin >> Vector_aleshe_ban[i];
	}
	for ( int i = Vector_aleshe_ban.size(); i >= 0; i--)
	{
		cout << Vector_aleshe_ban[i];
	}
}