#include <iostream>
using namespace std;

string strReverse(string &s)
{
    int j = s.length() - 1;
    for (int i = 0; i < j; i++, j--)
    {
        char temp = s[i];
        s[i] = s[j];
        s[j] = temp;
    }
    return s;
}

int main()
{
    string s;
    getline(cin, s);
    strReverse(s);
    cout << s;
    return 0;
}