import java.util.*;
public class twoD
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int total=n*n;
        int arr[]=new int[total];
        
        int count=0;
        for(int i=0;i<total;i++)
        {
            arr[i]=sc.nextInt();
            count++;
        }
 
        if(arr[i] != total)
        {
            System.out.println("Invalid input");
            return;
        }
        
        int index=0;
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<n;j++)
            {
                System.out.print(arr[index]);
                index++;
                if(j < n-1)
                {
                    System.out.print(" ");
                }
               
            }
             System.out.println(" ");
        }
        
        
    }
}