#include<bits/stdc++.h>
using namespace std;
int main(){
  int i,m,n,j,s,x,a,b,c,d;
  int e[10][10];
  cin>>n>>m;
  for(i=0;i<n;i++)
  	for(j=0;j<m;j++) cin>>e[i][j];
  cin>>s>>x;
  for(i=0;i<n;i++){
    for(j=0;j<m;j++){
    if(e[i][j]==s){
    a=i;
    b=j;}
	if(e[i][j]==x){
    c=i;
    d=j;}}}
  if(c==a&&abs(b-d)==1||b==d&&abs(a-c)==1) cout<<"Y";
  else cout<<"N";
  return 0;
}
/**************************************************************
	Problem: 2000
	User: wtq001
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/