fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let (mut w, mut d, mut o) = (1u8, 1, 1);
	for c in s.trim().chars() {
		match c {
			'a' | 's' => w *= 2,
			'l' | 'o' => d *= 2,
			_ => o = 0,
		}
	}
	println!("{}", ((w - 1) * (d - 1)).saturating_sub(o))
}