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

	return 0;
}

/**************************************************************
	Problem: 1120
	User: wuzhijing
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2076 kb
****************************************************************/