use std::io::stdin;

fn main() {
    let mut s = String::new();
    stdin().read_line(&mut s).ok();
    let n: usize = s.trim().parse().unwrap();
    stdin().read_line(&mut s).ok();
    let m: usize = s
        .split_whitespace()
        .collect::<Vec<_>>()
        .iter()
        .map(|a| a.parse::<usize>().unwrap())
        .sum();
    println!("{}", (100 + m % n) / n + (m % n == 0) as usize);
}