参考了https://www.luogu.com.cn/discuss/611407 清空vector数组vector<edge> e[MAXN];时越界了 应该是 ``` for(int i=1;i<MAXN;i++){ e[i].clear(); } //之前写成i<=MAXN了 ``` by emma_ren @ 2024-03-23 14:51:32