Main

import java.io.FileInputStream;
import java.io.FileWriter;
import java.util.Scanner;

public class Main_2 {
	static int SV = 0; // source vertex
	static int N = 0;
	static int M[][];

	public static void main(String[] args) {
		try {
			int i = 0, j = 0; // counters
			FileInputStream textFile = new FileInputStream("EXAMPLE(2).txt"); // name of input file must go in here
			Scanner scan = new Scanner(textFile);
			N = scan.nextInt(); // read in the size
			String flush = scan.nextLine(); // gets rid of linefeed
			System.out.println(N);
			M = new int[N][N]; // instantiates array
			// this loop reads in matrix from input file
			String line;
			while (i < N && (line = scan.nextLine()) != null) {
				j = 0;
				String delim = " ";
				String tokens[] = line.split(delim);
				for (String a : tokens) {
					M[i][j] = Integer.parseInt(a);
					j++;
				}
				i++;
			}
			if (i > N)
				;
			SV = scan.nextInt();
		} catch (Exception e) {
			e.printStackTrace();
		}

		printMatrix(M);
		System.out.println(SV);

	}

	public static void printMatrix(int[][] Matrix) {
		for (int i = 0; i < N; i++) {
			for (int j = 0; j < N; j++) {
				System.out.print(Matrix[i][j]);
				System.out.print(" ");

			}
			System.out.println();
		}

	}







}