#include<bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    for(int i=s.size()-1;i>=0;i--){
        cout<<s[i];
    }
    return 0;
}
/**************************************************************
	Problem: 1120
	User: linyuhang
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/