use std::io::BufRead;

    for line in std::io::stdin().lock().lines() {
        let line = line.unwrap();

    'outer: loop {
        let mut line = String::new();
        std::io::stdin()
            .read_line(&mut line)
            .expect("reached end of stdin while awaiting response");

                    continue;

                    continue 'outer;

    panic!("end of stdin reached");