358G思维题#include<bits/stdc++.h>#definelllonglongusingnamespacestd;intn,m,s,t,vis[55][55][2505],k;lldis[55][55][2505],v[55][55],ans;intmvx[]={-1,1,0,0};intmvy[]={0,0,-1,1};structNode{intx,y,d;};queue<Node>q;void