#include <sstream>
#include <iostream>
int main() {
uint8_t result = 0;
std::stringstream ss("2B");
ss << std::hex;
ss >> result;
std::cout << result;
return 0;
}
I2luY2x1ZGUgPHNzdHJlYW0+CiNpbmNsdWRlIDxpb3N0cmVhbT4KCmludCBtYWluKCkgewoJdWludDhfdCByZXN1bHQgPSAwOwoJc3RkOjpzdHJpbmdzdHJlYW0gc3MoIjJCIik7CglzcyA8PCBzdGQ6OmhleDsKCXNzID4+IHJlc3VsdDsKCQoJc3RkOjpjb3V0IDw8IHJlc3VsdDsKCQoJcmV0dXJuIDA7Cn0=