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



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 col {0}; col < ncols; ++col) {
        for (int row {0}; row < nrows; ++row) {
            if (col < ncols / 3) {
                cout << "0 146 70\n";    // green
            } else if (col < 2 * ncols / 3) {
                cout << "255 255 255\n";  // white
            } else {
                cout << "206 17 38\n";     // red
            }
        }
    }

    return EXIT_SUCCESS;
}