#include<bits/stdc++.h>
using namespace std;
int n,a[50][50],f[50][50];
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(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			cin>>f[i][j];
			a[i][j]==f[i][j];
		}
	}
	dfs(0,0);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(f[i][j]==0) cout<<2<<" ";
			else cout<<a[i][j]<<" ";	
		}
		cout<<endl;
	}
}
/**************************************************************
	Problem: 1802
	User: zhangzekai
	Language: C++
	Result: Wrong Answer
****************************************************************/