Solution -「洛谷 P5659」「CSP-S 2019」树上的数
DescriptionLink.联赛原题应该都读过吧……SolutionPart 0大致思路主要的思路就是逐个打破,研究特殊的数据得到普通的结论。Part 1暴力的部分分暴力的部分分很好拿,我们...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.