#include <iostream>
using namespace std;

int a[150][150],n,x1,y1,x2,y2;
bool f = false;//表示有没有走到 

//从x、y点开始逐步探测 
void num(int x,int y){
	if(x == x2 && y == y2){
		f = true;
	}else{
		a[x][y] = 1;//探测过的点,设置为不可探测,防止重复的探测 
		//上下左右探测,且不越界 
		if(x - 1 >= 1 && a[x - 1][y] == 0) num(x-1,y);
		if(x + 1 <= n && a[x + 1][y] == 0) num(x+1,y);
		if(y - 1 >= 1 && a[x][y - 1] == 0) num(x,y - 1);
		if(y + 1 <= n && a[x][y + 1] == 0) num(x,y + 1);
	}
} 

int main(){
	int i,j;
	cin>>n;
	//0表示能走,1表示不能走 
	for(i = 1;i <= n;i++){
		for(j = 1;j <= n;j++){
			cin>>a[i][j];
		}
	}
	cin>>x1>>y1>>x2>>y2;
	
	//如果起止点有1,则不需要探测 
	if(a[x1][y1] == 1 || a[x2][y2] == 1){
		cout<<"NO"<<endl; 
	}else{
		num(x1,y1);
		//探测完测试,如果走到了 
		if(f == true){
			cout<<"YES"<<endl; 
		}else{
			cout<<"NO"<<endl;
		}
	} 
}

/**************************************************************
	Problem: 1430
	User: admin
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2160 kb
****************************************************************/