#include <iostream>
using namespace std;
int
main ()
{
cout << 31.23 << ", ";
cout.setf (ios::hex, ios::basefield);
cout.setf (ios::showbase); //LINE I
cout << 31.23 << ", ";
cout.unsetf (ios::showbase); // LINE II
cout << 63.23 << ", ";
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgoKdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCmludAptYWluICgpCnsKCiAgY291dCA8PCAzMS4yMyA8PCAiLCAiOwoKICBjb3V0LnNldGYgKGlvczo6aGV4LCBpb3M6OmJhc2VmaWVsZCk7CgogICBjb3V0LnNldGYgKGlvczo6c2hvd2Jhc2UpOyAgICAgICAgIC8vTElORSBJCgogIGNvdXQgPDwgMzEuMjMgPDwgIiwgIjsKCiAgY291dC51bnNldGYgKGlvczo6c2hvd2Jhc2UpOyAgICAvLyBMSU5FIElJCgogIGNvdXQgPDwgNjMuMjMgPDwgIiwgIjsKCiAgcmV0dXJuIDA7Cgp9Cg==