#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[200][200],n,m,i,j,w1,w2,s1,s2;
	cin>>n>>m;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cin>>a[i][j];
		}
	}
	cin>>s1>>s2;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			if(a[i][j]==s1){
				w1=i;
				w2=j;
			}
		}
	}
	if((a[w1-1][w2]==s2)||(a[w1+1][w2]==s2)||(a[w1][w2-1]==s2)||(a[w1][w2+1]==s2)){
		cout<<"Y"; 
	}else{
		cout<<"N";
	}
	return 0;
}

/**************************************************************
	Problem: 2000
	User: cyp
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2104 kb
****************************************************************/