#! /usr/bin/bc -q

define a(i, j) {
	scale = 0
	if(i % 2 == 0) return i;
	if(j - i >= 0.5) return i + 1;
	return i - 1;
}

define x(w, h, n) {
	scale = 20
	f = w / n
	scale = 0
	i = h / f
	scale = 1
	j = h / f
	return a(i, j);
}

x(720, 576, 600)
