#include <iostream>

using namespace std;

int main()
{
	int p;
	string x, y, a, b;

	cout << "Masukkan panjang atau lebar dari persegi: ";
	cin >> p;
	cout << "Karakter 1: ";
	cin >> a;
	cout << "Karakter 2: ";
	cin >> b;
	cout << endl;

	for (int i = 0; i < p; ++i)
	{
		if (i % 2 == 0)
		{
			x = a;
			y = b;
		} else {
			x = b;
			y = a;
		}

		for (int o = 0; o < p; ++o)
		{
			if (o % 2 == 0)
			{
				cout << " " << x;
			} else {
				cout << " " << y;
			}
		}

		cout << endl;
	}

	return 0;
}