网站
lixwei密码gongbutangjuan
代码https://cn.vjudge.net/contest/242367 # status/17110501014//1/
二叉树
33559 www.cn blogs.com/zhangbao chong/p/5164994.html
UBUNTU https://paste.ubuntu.com/
kuku打字http://dazi.kukuw.com/my _ typing.PHP? do=index
51 nod 3359 www.51 nod.com/online judge/problem list.html #! groupId=3
3、私人教程http://www.run OOB.com/cplusplus/CPP-data-types.html