#include<bits/stdc++.h>
using namespace std;
int main() {
	int n,m,j,i,x,y,c[202][202],a,b;
	cin>>n>>m;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cin>>c[i][j];
		} 
	}
	cin>>x>>y;
	for(i=0;i<n;i++){
        for(j=0;j<m;j++){
            if(c[i][j]==x){
                a=i;
                b=j;
            }
        }
    }
    if(c[a+1][b]==y||c[a-1][b]==y||c[a][b+1]==y||c[a][b-1]==y){
        cout<<"Y"; 
    }else{
        cout<<"N";
    }	 
}

/**************************************************************
	Problem: 2000
	User: chenjunlin
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2108 kb
****************************************************************/