https://www.luogu.com.cn/problem/P9977https://www.luogu.com.cn/article/ijti2qdg最后一段的理解，个人认为不妥，应该根据代码来看：#include<stdio.h>#include<algorithm>structnode{ inta,b;}c[200010];boolcmp(nodea,nodeb){ returna.b<b.b;}intans[