摘要：
题目：Description There is an old stone game, played on an arbitrary general tree T. The goal is to put one stone on the root of T observing the following rules: At the beginning of the game, the player picks K stones and puts them all in one bucket. At each step of the game, the player can pick one st 阅读全文
摘要：
内容如题：模拟和排序专场 阅读全文