#ifndef _TEST

#define _TEST

#include <iostream>

#include <vector>

using namespace std;

class Task{

	public:

		vector<char> inversion(string str){

            vector <char> vec;

            int index = str.length();

            while(index--){

            	vec.push_back(str[index]);

            	}

            return vec;

			}

};

#endif

include <iostream>

#include <vector>

#include <stdio.h>

#include "Task.hpp"

using namespace std;

int main(){

	string str;

	getline(cin,str);

	Task tt;

    vector <char> result;

	result = tt.inversion(str);

    for(int i = 0; i<str.length();i++){

    	cout << result[i];

    }

    cout << endl;

}

#ifndef _TEST

#define _TEST

#include <iostream>

#include <vector>

using namespace std;

class Task{

	public:

		vector<char> inversion(string str){

            vector <char> vec;

            int index = str.length();

            while(index--){

            	vec.push_back(str[index]);

            	}

            return vec;

			}

};

#endif