use std::io::{self, Read};

fn read_stdin() -> Vec<String> {
    let mut buffer = String::new();
    io::stdin().read_to_string(&mut buffer).ok();
    buffer.trim().split('\n').map(|s| s.to_string()).collect()
}

fn main() {
    let days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
    let result = (1..days.len() + 1).zip(days.iter()).fold(0, |sum, (i, day)| {
        sum + (1..*day + 1).fold(0, |acc, d| {
            if d >= 10 {
                let a = d / 10;
                let b = d % 10;
                if i == a + b {
                    acc + 1
                } else {
                    acc
                }
            } else if i == d {
                acc + 1
            } else {
                acc
            }
        })
    });
    println!("{}", result);
}