fn main() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    let s = s.trim().chars().collect::<Vec<char>>();

    let ones = s.iter().filter(|&&c| c == '0').count();
    if s.len() == ones + 2 || ones == 2 {
        println!("Yes");
    } else {
        println!("No");
    }
}