#include <iostream>
#include <string>
using namespace std;

void re(string& str) {
    int n = str.length();
    for (int i = 0; i < n / 2; i++) {
        swap(str[i], str[n - i - 1]);
    }
}

int main() {
    string s;
    cin >> s;
    re(s);
    cout << s << endl;
}

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