#include <iostream>
#include <cstring>
using namespace std;
 
int main(){
    char str[21];
    char temp[21];
    int i = 0;
 
    memset(str, 0, sizeof(str));
    memset(temp, 0, sizeof(temp));
 
    while(cin >> str){
        int n = strlen(str);
        for(n--; n!=0; ){
            temp[i++] = str[n--];
        }
        cout << temp << endl;
    }
    return 0;
}