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

//Run it like this:     ./a.out | /usr/bin/pnmtopng > solid.png
//                      ls -l
//                      file solid.png
//                      cp solid.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) {
			cout << "0 0 255\n";    //blue
		}
	}

	return EXIT_SUCCESS;
}