题解 | #字符逆序#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String str = sc.nextLine();
            StringBuilder reverse = new StringBuilder(str).reverse();
            System.out.println(reverse);
        }
        sc.close();
    }

}