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

int main() {
    string s;
    getline(cin, s);
    // write your code here......
    revers(s);
    cout << s;
    return 0;
}