#include<bits/stdc++.h>
using namespace std;
#include<string>
// write your code here......
string Reverse(string& s) {
    char temp;
    for (int i = 0; i < s.length()/2; i++) {
        temp = s[i];
        s[i] = s[s.length() - 1 - i];
        s[s.length() - 1 - i] = temp;
    }
    return s;

}

int main() {
    string s;
    getline(cin, s);
    // write your code here......
    Reverse(s);

    cout << s;
    return 0;
}