#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,n,m,x,y,a[100][100],j,s=0,t=0,z,v;
	cin>>n>>m;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cin>>a[i][j];
		}
	}
	cin>>s>>t;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			if(a[i][j]==s){
				x=i;
				y=j;
			}
			if(a[i][j]==t){
				z=i;
				v=j;
			}
		}
	}
	if((abs(x-z)==1&&y-v==0)||(abs(y-v)==1&&x-z==0)){
		cout<<"Y";
	}else{
		cout<<"N";
	}
	return 0;
}

/**************************************************************
	Problem: 2000
	User: zzz
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/