typedef bool {}
typedef i27 {}
typedef i9 {}

extern _putchar(i9 c);

fib(i27 n => i27)
{
	if n < 2 {
		return 1;
	}

	return fib(n - 1) + fib(n - 2);
}

main()
{
	_putchar('0' + fib(35) as i9);
	_putchar('\n');
}