const CALENDAR: [i32; 13] = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

fn is_happyday(m: i32, d: i32) -> bool {
    return m == d.to_string().chars().map(|x| x.to_digit(10).unwrap() as i32).sum();
}

fn main(){
    let mut total = 0;
    for (m, d) in CALENDAR.iter().enumerate() {
        if m == 0 { continue; }
        for i in 1..*d {
            if is_happyday(m as i32, i) {
                total += 1;
            }
        }
    }
    println!("{}", total);
}