#!/usr/bin/env /friends/bin/cxxscript
#include <iostream>
#include <sstream>
#include <iomanip>
#include <string>
int main (){
    std::stringstream ss;
    ss << std::hex << std::setw(4) << std::setfill('0') << 16;
    ss << std::hex << std::setw(4) << 256;
    std::cout << ss.str() << std::endl;
}