#include<bits/stdc++.h> using namespace std; int a[110][110],n,m,s,b; int main(){ cin>>n>>m; for(int i=1;i<=n;i++){ for(int j=1;j<=m;j++){ cin>>a[i][j]; } }cin>>s>>b; for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ if(a[i][j]==s&&a[i-1][j]==b||a[i][j]==s&&a[i][j-1]==b||a[i][j]==s&&a[i][j+1]==b||a[i][j]==s&&a[i+1][j]==b){ cout<<"Y"; return 0; } } } cout<<"N"; return 0; }//a[i-1][j]==0&&a[i-1][j-1]==0&&a[i][j-1]==0&&a[i][j+1]==0&&a[i+1][j+1]==0&&a[i+1][j]==0&&a[i+1][j-1]==0&&a[i-1][j+1]==0