/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	static void SubMat(int mat[][] ,int n, int s){
 
			for(int i=0;i<s;i++){
				for(int j=0;j<s;j++){
					System.out.print(mat[i][j]+" ");
				}
				System.out.println();
			}
		}
	public static void main (String[] args) throws java.lang.Exception
	{
 
		Scanner in=new Scanner(System.in);
		int n;
		int s;
		System.out.println("Enter order of matrix");
		n=in.nextInt();
		int mat[][] =new int[n][n];
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++)
			mat[i][j]=in.nextInt();
		}
		System.out.println("Enter order of submatrix");
		s=in.nextInt();
		SubMat(mat,n,s);
 
	}
}

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