#include <bits/stdc++.h>
using namespace std;
int main ()
{
string str;
cin >> str;
reverse ( str.begin(), str.end() );
cout << str;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
int main ()
{
string str;
cin >> str;
reverse ( str.begin(), str.end() );
cout << str;
return 0;
}