https://blog.wongcw.com/2021/07/08/aoc%e6%8e%a8%e5%87%bai1601p-15-6%e8%8b%b1%e5%af%b8usb%e4%be%bf%e6%94%9c%e5%bc%8f%e9%a1%af%e7%a4%ba%e5%99%a8%e5%94%ae199%e8%8b%b1%e9%8e%8a/