#include<bits/stdc++.h>
using namespace std;
int n,a[31][31],f[31][31];
void dfs(int i,int j){
    if(i<0||i>n+1||j<0||j>n+1||f[i][j]==1) return;
    f[i][j] = 1;
    dfs(i,j+1);
    dfs(i+1,j);
    dfs(i,j-1);
    dfs(i-1,j);
}
int main(){
   int i,j;
   cin>>n;
   for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            cin>>f[i][j];
            a[i][j] = f[i][j];
        }
    }
    dfs(0,0);
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(f[i][j]==0) cout<<2<<" ";
            else cout<<a[i][j]<<" ";
        } 
        cout<<endl;
    } 
    return 0;
}
 
/**************************************************************
	Problem: 1802
	User: zhangzekai
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2080 kb
****************************************************************/