#include<bits/stdc++.h>
#include <cstring>
#include <algorithm>
using namespace std;
// write your code here......
void reverse(string &s)
{
    for(int i = 0 ; i < s.size() / 2 ;i ++)
    {
        swap(s[i],s[s.size() - i - 1]);
    }
}
int main(){
    string s;
    getline(cin,s);
    // write your code here......
    reverse(s);
    cout<<s;
    return 0;
}