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

//Flag of Ukraine.
//Run it like this:     ./a.out | /usr/bin/pnmtopng > ukraine.png
//                      ls -l
//                      file ukraine.png
//                      cp ukraine.png public_html

int main()
{
	int nrows {20};   //number of rows of pixels
	int ncols {30};   //number of columns of pixels

	cout << "P3\n"
		<< ncols << " " << nrows << "\n"
		<< 255 << "\n";

	for (int row {0}; row < nrows; ++row) {
		for (int col {0}; col < ncols; ++col) {
			if (row < 10) {
				cout << "0 87 183\n";    //upper half is blue
		        } else {
				cout << "255 215 0\n";   //lower half is yellow
			}
		}
	}

	return EXIT_SUCCESS;
}