#include<iostream>
#include<string>

using namespace std;

int main(){
	string str;
	string ans;
	while(1){
		cin >> str;
		ans = str;
		for (int i = 0; i < str.size(); i++){
			ans[i] = str[str.size() - i - 1];
		}
		cout << ans << endl;
	}
}