static DAYS: &'static [i32] = &[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

fn main() {
    let mut n = 0;
    for mm in 1..12 { // 12月は無理
        for l in 0..(3+1) {
            let r = mm - l;
            if r >= 0 && r < 10 {
                let dd = l * 10 + r;
                if dd <= DAYS[(mm - 1) as usize] {
                    n += 1;
                }
            }
        }
    }

    println!("{}", n);
}