// expect: 0/1/1/5/
include rt;
void pn(int x) { rt.put_n(x); rt.put_c(10); }
fn main() {
	int[?] a = rt.new(int[?]);
	pn(len(a)); pn(cap(a) >= 4);
	int i = 0;
	while (i < 5) { push(a, i); i++; }
	pn(cap(a) >= 8);
	pn(len(a));
	return 0;
}
// zc0: skip