N = int(input())
S = [list(input())for _ in range(N)]
T = list(map(list,zip(*S)))

naname=[]
for i in range(N):
    naname.append(S[i][i])
naname.sort()
naname2=[]
for i in range(N):
    naname2.append(S[N-i-1][i])
naname2.sort()

cnt=0
for s in S:
    x = set(s)
    x = list(x)
    x.sort()
    if s.count(".")==1 and x == ['.', 'A']:
        cnt+=1

for t in T:
    x = set(t)
    x = list(x)
    x.sort()
    if t.count(".")==1 and x == ['.', 'A']:
        cnt+=1

x = set(naname)
x = list(x)
x.sort()
if naname.count(".")==1 and x == ['.', 'A']:
    cnt+=1

x = set(naname2)
x = list(x)
x.sort()
if naname2.count(".")==1 and x == ['.', 'A']:
    cnt+=1

print(cnt)