#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<<endl;

	 return 0;


}