#include<stdio.h>
#include<math.h>
int main()
{
	int a[200][200];
	int n,m,i,j,min=200,max=0;
	scanf("%d %d",&n,&m);
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			scanf("%d",&a[i][j]);
		}	
	}
	int x,y;
	scanf("%d %d",&x,&y);
	int x1,y1,x2,y2;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			if(a[i][j]==x) {
			x1=i;
			y1=j;
		}
			if(a[i][j]==y) {
			x2=i;
			y2=j;
		}		
	}
}
	if((x1==x2&&abs(y1-y2)==1)||(abs(x1-x2)==1&&y1==y2)) printf("Y");
	else printf("N");
	return 0;
 } 
/**************************************************************
	Problem: 2000
	User: admin
	Language: C
	Result: Accepted
	Time:11 ms
	Memory:1180 kb
****************************************************************/