languag3

复现一下去年hkcert的部分题目，剩下的有空再看

感觉大家都会同源，就我不会，花了两天的时间对着鸡块blog和huangx607087学习了一下

拿了个一血，感觉这题也很不错，遂记录一下

没打这个比赛，后面闲着做了做几道，剩下的以后再看

闲着无聊随便出了几道题玩玩()

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub.