#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <stdio.h>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
using namespace std;
#define Would
#define you


int main() {
	string h;
	cin >> h;
	for (int i = h.length() - 1; i >= 0; --i) { cout << h[i]; }
	cout << endl;
}