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

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