#include <iostream>
#include <fstream>

using namespace std;
ofstream fout("matrix.out");

int main()
{
	int m[20][20], i, j, n = 16;

	for (i = 0; i < n; ++i) {
		for (j = 0; j < n; ++j) {
			if (i % 2 == 0 && j % 2 == 1) {
				m[i][j] = 2;
			}
			else {
				m[i][j] = 1;
			}
		}
	}

	for (i = 0; i < n; ++i) {
		for (j = 0; j < n; ++j) {
			fout << m[i][j] << " ";
		}
		fout << "\n";
	}

	return 0;
}