饼图吧？
by _ikun_newperson @ 2024-03-27 21:43:11
@[__vector__](/user/507348) 我猜是 容斥原理 的缩写
by sunkuangzheng @ 2024-03-28 08:14:54
@[sunkuangzheng](/user/679936) ok,thx。
by __vector__ @ 2024-03-28 11:10:13