fn run() {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).unwrap();
    let ans = s
        .trim()
        .split_whitespace()
        .map(|s| s.parse::<u32>().unwrap())
        .sum::<u32>();
    println!("{}", ans);
}

fn main() {
    run();
}