#include<iostream>
#include<string>

using namespace std;

int main(){

	string A;
	char R;
	cin >> A;

	for(int i = 0; i < A.length()/2 ;++i){
		R = A[i];
		A[i] = A[A.length() - i - 1];
		A[A.length() - i - 1] = R;
	}
	cout << A << '\n';

	return 0;

}