视频链接：D382-SATCF27DRingRoad2_哔哩哔哩_bilibili   CF27DRingRoad2-洛谷|计算机科学教育新生态(luogu.com.cn)#include<iostream>#include<cstring>#include<algorithm>usingnamespacestd;constintN=205;intn,m,x[N],y[N];intdfn[N],