fn main() {
    let t:[u8;12] = [31,28,31,30,31,30,31,31,30,31,30,31];
    let mut c = 0;
    for (m, d) in t.iter().enumerate() {
        for i in 1..(d+1) {
            let s = i.to_string().chars()
                .map(|c|c.to_string().parse::<usize>().ok().unwrap()).sum();
            if m+1 == s {
                c += 1;
            }
        }
    }
    println!("{}", c);
}