#include <bits/stdc++.h>
using namespace std;
int main(){
	string s;
	getline(cin,s);
	for(int i=s.size()-1;i>=0;i--)cout<<s[i];
	return 0;
}

/**************************************************************
	Problem: 1120
	User: zhouhongyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/