摘要: 考虑除开$1 k$以外的任意点$d$在长度为$k 1$的链上有: 对于任意$i,i+1 (i\in "1,k 1])$,$col[d][i]+col[d][i+1" p (a或a+1) q p,q,r p a,q a r a+1 cpp include include "graph.h" using 阅读全文
posted @ 2019-08-12 16:06 jerome_wei 阅读(254) 评论(0) 推荐(0)