#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cmath>
#include <string>
#include <vector>
#include <set>
#include <stack>
#include <functional>
#define rep(i, n) for(int i = 0; i < n; i++)
#define ll long long
using namespace std;


int main()
{
	cin.tie(0);
	ios::sync_with_stdio(false);
    string s;
    cin >> s;
    rep(i, s.size()) {
        cout << s[s.size() - i - 1];
    }
    cout << "\n";
	return 0;
}
