#include<bits/stdc++.h>
using namespace std;
int n,a[101][101],ha,la,hb,lb,k;
int fx[4]={0,1,0,-1};
int fy[4]={1,0,-1,0};
void dfs(int x,int y){
	a[x][y]=++k;
	if(x==hb&&y==lb){
		cout<<"YES";
	}
	else if(k>hb*lb){
		cout<<"NO";
	}
	for(int i=0;i<=3;i++){
		int tx=x+fx[i];
		int ty=y+fy[i];
		if(tx>=1&&tx<=n&&ty>=1&&ty<=n&&a[tx][ty]==0){
			dfs(tx,ty);
		}
	}
}
int main(){
     cin>>n;
     for(int i=1;i<=n;i++){
     	for(int j=1;j<=n;j++){
     		cin>>a[i][j];
     	}
     }
     cin>>ha>>la>>hb>>lb;
     if(a[hb][lb]==1){
     	cout<<"NO";
     }
     dfs(ha,la);
	return 0;
}

/**************************************************************
	Problem: 1430
	User: chenjingqi
	Language: C++
	Result: Wrong Answer
****************************************************************/