long factorial(long x) {
	return x > 0 ? x * factorial(x - 1)
		: 1;
}

long fibonacci(long x) {
	return x > 0 ?
		x > 1 ?
			fibonacci(x-1) + fibonacci(x-2)
		: 1
		: 0;
}

int main(int argc, char **argv) {
	return factorial(6);
}