#ifndef _TEST

#define _TEST

#include <iostream>

#include <vector>

using namespace std;

class Task{

	public:

		int getNum(int n){

        /********* Begin *********/

		int count = 0;

		while(n > 1)

		{

			if (n % 2== 0)

				n = n/2;

			else

			{

				n = n-1;

				count = count+1;

			}

		}

		return count+1;

        /********* End *********/

		}

};

#endif

#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;

}