#include <iostream>
using namespace std;
int main()
{
string ciag_liczb;
getline (cin, ciag_liczb);
for (int i=(ciag_liczb.length ()-1); i >=0; i --)
{
cout << ciag_liczb [i];
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgoKdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludCBtYWluKCkKewogICAgc3RyaW5nIGNpYWdfbGljemI7CiAgICAKICAgIGdldGxpbmUgKGNpbiwgY2lhZ19saWN6Yik7Cgpmb3IgKGludCBpPShjaWFnX2xpY3piLmxlbmd0aCAoKS0xKTsgaSA+PTA7IGkgLS0pCiAgICB7CiAgICAgICAgY291dCA8PCBjaWFnX2xpY3piIFtpXTsKICAgIH0KCiAgICByZXR1cm4gMDsKfQo=