#include <bits/stdc++.h> using namespace std; int n,a[50][50],fx[4]={-1,1,0,0},fy[4]={0,0,-1,1}; dfs(int x,int y){ a[x][y]=9; for(int h=0;h<4;h++){ int tx=x+fx[h]; int ty=y+fy[h]; if(tx<=n&&tx>=1&&ty<=n&&ty>=1&&a[tx][ty]==0){ dfs(tx,ty); } } } int main(){ cin>>n; for(int j=1;j<=n;j++){ for(int k=1;k<=n;k++){ cin>>a[j][k]; } } for(int j=1;j<=n;j++){ for(int k=1;k<=n;k++){ if((j>1&&j<n)||(k>1&&k<n)||a[j][k]==1)continue; dfs(j,k); } } for(int j=1;j<=n;j++){ for(int k=1;k<=n;k++){ switch(a[j][k]){ case 9: cout<<0<<" "; break; case 1: cout<<1<<" "; break; case 0: cout<<2<<" "; break; } } cout<<"\n"; } return 0; } /************************************************************** Problem: 1802 User: zhouhongyi Language: C++ Result: Compile Error ****************************************************************/