#include<bits/stdc++.h>
using namespace std;
int n,m,a[222][222],x,y,xi,yi,xj,yj;
int main(){
	cin>>n>>m;
	
	for(int i=1;i<=n;i++) {
		for(int j=1;j<=m;j++){
		cin>>a[i][j];
		}
		
	}cin>>x>>y;
		for(int i=1;i<=n;i++) {
		for(int j=1;j<=m;j++){
			if(a[i][j]==x){
				xi=i;
				xj=j;
			}
			
		}
	}
		for(int i=1;i<=n;i++) {
		for(int j=1;j<=m;j++){
			if(a[i][j]==y){
				yi=i;
				yj=j;
			}
			
		}
	}
	if((abs(xi-yi)==1&&xj==yj)||(abs(xj-yj==1)&&xi==yi))cout<<'Y';
	else 
	cout<<'N'; 
return 0; 
}
/**************************************************************
	Problem: 2000
	User: chenxuanyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2264 kb
****************************************************************/