use std::io;

fn main() {
    println!("{}", reversed(read_line()));
}

fn read_line() -> String {
    let mut line = String::new();
    io::stdin().read_line(&mut line)
        .expect("Failed to read line");
    return line
}

fn reversed(s: String) -> String {
    return s.chars().rev().collect::<String>();
}