#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std ;
/*
ifstream cin ("input") ;
ofstream cout ("output") ;
*/
int main(int argc, char const *argv[])
{
	srand(time(NULL)) ;
	int n = 16 ; 
	for (int i = 1 ; i <= 16 ; ++ i) {
		for (int j = 1 ; j <= 16 ; ++ j) {
			if ((i + j) % 2) {
				if (rand() % 17)
				cout << 1 << ' ' ; 
				else cout << 2 << ' ' ;
			}
			else 
				cout << 2 << ' ' ; 
		}
		cout << '\n' ;
	}
	return 0;
}