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