#include <iostream>
#include <cstdlib>
#include <cmath>     //for the sqrt function
using namespace std;

/*
Flag of Japan.
Download, compile, and run it like this:

cd
wget https://markmeretzky.com/fordham/1600/src/if/japan.C
compile japan
japan | /usr/bin/pnmtopng > public_html/japan.png

Then point your web browser at
https://storm.cis.fordham.edu/~jsmith/japan.png
*/


int main()
{
        const int miny {-10};        //row number of bottom row
        const int maxy { 10};        //row number of top row
	const int minx {-15};        //column number of leftmost column
        const int maxx { 15};        //column number of rightmost column

	const int nrows {maxy - miny + 1}; //number of rows of pixels
	const int ncols {maxx - minx + 1}; //number of columns of pixels

	const double radius {.3 * nrows};  //of red circle

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

        for (int y {miny}; y <= maxy; ++y) {
                for (int x {minx}; x <= maxx; ++x) {
			if (sqrt(x*x + y*y) <= radius) {
                                cout << "255 0 0\n";      //in the red circle
                        } else {
                                cout << "255 255 255\n";  //in white background
                        }
                }
        }

        return EXIT_SUCCESS;
}