#include <iostream>
#include <string>
using namespace std;
int main()
{
string str;
cin>>str;
int length = str.size();
for(int i = length-1;i >= 0; i--){
cout<<str[i];
}
return 0;
}
#include <string>
using namespace std;
int main()
{
string str;
cin>>str;
int length = str.size();
for(int i = length-1;i >= 0; i--){
cout<<str[i];
}
return 0;
}