#include <iostream>
#include <string>

int main()
{
	std::string keyInStr = "1314191A1B";
	unsigned char keyInHex[5];

	for (int i = 0; i < 5; ++i)
	{
		keyInHex[i] = std::stoi(keyInStr.substr(i*2, 2), nullptr, 16);
		std::cout << std::hex << (int) keyInHex[i] << " ";
	}

	return 0;
}