#include <iostream>
#include <string>
using namespace std;
int main() {
    string s;
	cin >> s;
    for (int i = s.size(); i > 0; i--) {
    	cout << s[i - 1];
	}
    return 0;
}

#include <iostream>
#include <string>
#include <algorithm>

int main() {
    std::string s;
    std::cin >> s;
    std::reverse(s.begin(), s.end());
    std::cout << s << std::endl;
    return 0;
}