use std::io;
fn main() {
let mut buffer = String::new();
let stdin = io::stdin();
let mut total = 0;
loop {
let input = {
buffer.clear();
stdin.read_line(&mut buffer).unwrap();
buffer.trim()
};
if input == "exit" {
break;
}
let n = input.parse::<i32>().unwrap();
println!("Read: {}", n);
total += n;
}
println!("{:?}", `(total)`);
}