#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: lidongcheng
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2076 kb
****************************************************************/