fn main() {
    let stdin = std::io::read_to_string(std::io::stdin()).unwrap();
    let mut stdin = stdin.split_ascii_whitespace();

    let a: char = stdin.next().unwrap().parse().unwrap();
    let b: char = stdin.next().unwrap().parse().unwrap();

    println!("{}", output(solve(a, b)));
}

fn solve(a: char, b: char) -> (char, char) {
    (b, a)
}

fn output((x, y): (char, char)) -> String {
    String::from(x) + " " + &String::from(y)
}