#include <iostream>
#include <vector>
using namespace std;

int main() {
	int X = 2, Y = 2;
	std::vector< std::vector< unsigned char > > index(X, std::vector<unsigned char>(Y));
	index[0][0] = 10;
	index[0][1] = 20;
	index[1][0] = 30;
	index[1][1] = 40;
	for(int i = 0; i < X; ++i) for (int j = 0; j < Y; ++j) cout << int(index[i][j]) << endl;
	return 0;
}