题目描述
Write a program which reverses a given string str.
Input
str (the size of str ≤ 20) is given in a line.
Output
Print the reversed str in a line.
Example
Input
w32nimda
Output
admin23w
输入格式
见题面
输出格式
见题面
样例输入
w32nimda
样例输出
admin23w