#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,m,i,j;
    cin>>n>>m;
    for(i=0;i<n;i++){
    	for(j=0;j<m;j++){
    		cin>>a[i][j];
    	}
    }
    int x,y;
    cin>>x>>y;
    int x1,y1,x2,y2;
    for(i=0;i<n;i++){
    	for(j=0;j<m;j++){
    		if(a[i][j]==x){
    			x2=i;
    			y2=j;
    		}
    		if(a[i][j]==y){
    			x2=i;
    			y2=j;    	
    	}
    }
	 
	if(x1==x2&&ads(y1-y2)==1)||(abs(x1-x2)==1&&y1==y2))
    else printf("N");
    return 0;
    }
/**************************************************************
	Problem: 2000
	User: chenmingyu
	Language: C++
	Result: Compile Error
****************************************************************/