
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <stack>
#include <cctype>
#include <complex>
#include <vector>
#include <algorithm>

using namespace std;


bool solve(){

	string str;
	cin>> str;
	int n=str.size();
	for(int i=n-1;i>=0;i--){
		cout<< str[i];
	}
	cout<< endl;
	
	return true;
}

int main(){
	cout.setf(ios::fixed);
	cout.precision(10);
	solve();

	return 0;
}

 