#include<iostream>
using namespace std;
const int dx[4]={0,0,1,-1};
const int dy[4]={1,-1,0,0};
int n;
int a[35][35],b[35][35];
void dfs(int x,int y)
{
	int i;
    if (x<1||y>n||x<1||y>n||a[x][y]!=0) return;
    a[x][y]=1;
    for (i=0;i<4;i++) dfs(x+dx[i],y+dy[i]);
}
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			cin>>b[i][j];
			if(b[i][j]==0) a[i][j]==0;
			else a[i][j]==2;
		}
	}
	dfs(0,0);
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=n;j++)
		{
			if(a[i][j]==0) cout<<"2"<<" ";
			else cout<<b[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}