package kn_10_02;
import java.util.Scanner;

public class Task_2 {
	
	static boolean [][] maze;
	static int eX, eY;
	static int aX, aY;
	static int zX, zY;
	static int cX, cY;
	static int dX, dY;
	static Scanner sc = new Scanner(System.in);
	
	public static void main(String[] args) {
		System.out.print("Enter the length of maze: ");
		int n = sc.nextInt();
		maze = new boolean[n][n];
		getMaze();
		int bX, bY;
		System.out.print("Ax = ");
		aX = bX = sc.nextInt();
        System.out.print("Ay =: ");
		aY = bY = sc.nextInt();
        System.out.print("Bx = ");
		zX = sc.nextInt();
        System.out.print("By = ");
		zY = sc.nextInt();
		
		System.out.print("Cx = ");
		cX = sc.nextInt();
        System.out.print("Cy =: ");
		cY = sc.nextInt();
        System.out.print("Dx = ");
		dX = sc.nextInt();
        System.out.print("Dy = ");
		dY = sc.nextInt();	
		eX = cX;
		eY = cY;
		boolean result = findPath(bX, bY);
		if(!result){
			System.out.println("No");
			return;
		}
		eX = dX;
		eY = dY;
		result = result & findPath(bX, bY);
		if(!result){
			System.out.println("No");
			return;
		}
		bX = cX;
		bY = cY;
		eX = zX;
		eY = zY;
		result = result & findPath(bX, bY);
		if(!result){
			System.out.println("No");
			return;
		}
		bX = dX;
		bY = dY;
		result = result & findPath(bX, bY);
		System.out.println(result);
	}
	
	static boolean findPath(int bX, int bY) {
		try {
			if(!isFree(bX, bY))
				return false;
			else if(bX == eX && bY == eY)
				return true;
			else {
				fill(bX, bY);
				boolean result = findPath(bX-1, bY) ||
				       findPath(bX+1, bY) ||
				       findPath(bX, bY-1) ||
				       findPath(bX, bY+1);
				undo(bX, bY);
				return result;
			}
		}
		catch(Exception e){ return false; }		
	}
	
	static void getMaze() {
	    for (int i = 0; i<maze.length; i++)
	      for (int j = 0; j<maze.length; j++)
	        maze[i][j] = sc.nextInt()!=0;
	}

	static boolean isFree(int x, int y) {
	  return maze[x][y];
	}

	static void fill(int x, int y) {
	  maze[x][y] = false;
	}

	static void undo(int x, int y) {
	  maze[x][y] = true;
	}

}