#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,m,j,i,x,y,c[200][200],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: chenmingyu
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2100 kb
****************************************************************/