摘要: J. Ka Chang Given a rooted tree ( the root is node 11 ) of NN nodes. Initially, each node has zero point. Then, you need to handle QQ operations. Ther 阅读全文
posted @ 2018-09-13 14:14 暴力都不会的蒟蒻 阅读(271) 评论(0) 推荐(0) 编辑