#include <iostream>
#include <stdlib.h>
#include <cstring>
#include <stdio.h>
#define MAXLEN 20

using namespace std;


char S2[MAXLEN];
char S1[MAXLEN];
int counter=0;
int var=0,var2=0;
int i,j;


int main()
{



    gets(S1);





    for (i=0; S1[i]!='\0';i++){


    }
    var=i;
    var2=i;
        for (j=0,i=0; var>=0;j++,i++,var--){


            S2[j]=S1[i];


        }
        S2[j] = '\0';

    j=0;
    while (var2 >=0){
        cout << S2[j];

        var2--;
        j++;

    }



    return 0;
}