use std::io::stdin;

fn get_line() -> String {
    let mut line = String::new();
    stdin().read_line(&mut line).ok();
    line
}

fn main() {
    get_line();
    let second_line = get_line();
    let splited_line: Vec<&str> = second_line.trim().split(" ").collect();

    let mut result: i64 = 0;
    for i in splited_line {
        let num: i64 = i.parse().unwrap();
        result += num;
    }
    println!("{}", result);
}