![[unknown OJ] ZZH的旅行](/uploads/reation/bcimg10.png)
[unknown OJ] ZZH的旅行
一、题目点此看题二、解法#include <cstdio>#include <vector>#include <iostream>#include <queue>using namespace std;const int M = 1000005;int read(){ int x=0,f=1;char c; while((c=getchar())<'0' || c&
