use std::io;
use std::io::prelude::*;

fn main() {
    let stdin = io::read_to_string(io::stdin()).unwrap();
    let mut stdin = stdin.split_whitespace();
    let stdout = io::stdout();
    let mut stdout = io::BufWriter::new(stdout.lock());

    let n: usize = stdin.next().unwrap().parse::<usize>().unwrap();
    let mut sn = 0;
    for _ in 0..n {
        let a: usize = stdin.next().unwrap().parse::<usize>().unwrap();
        sn += a;
    }
    writeln!(stdout, "{}", sn).unwrap_or(());

}