use proconio::input;

fn main() {
    input! {
        s: String,
    }

    let alphabet_length = s.chars().take_while(|&c| ('a'..='z').contains(&c)).count();
    let ans = s[..alphabet_length]
        .chars()
        .rev()
        .chain(s[alphabet_length..].chars())
        .collect::<String>();
    println!("{}", ans);
}