题目链接：填涂颜色思路代码#include<bits/stdc++.h>usingnamespacestd;constintN=30+10;#definelllonglongintmp[N][N],dir[5][2]={{1,0},{0,1},{-1,0},{0,-1}},n;boolvis[N][N];boolcheck(intx,inty){returnx>=