n,m=list(map(int,input().split()))
a=list()


sum=0
for i in range(n):
    a.append(list(map(int,input().split())))
x,y=list(map(int,input().split()))
x,y=x-1,y-1

sum=-1
for i in range(n):
    for j in range(m):
        if i==x or j==y:
            if a[i][j]==a[x][y]:
                sum=sum+1
        
       
print(sum)

        



/**************************************************************
	Problem: 1998
	User: admin
	Language: Python
	Result: Accepted
	Time:110 ms
	Memory:34480 kb
****************************************************************/