def is_bingo(n, arr):
    ans = 0
    for i in range(n):
        if all(arr[i][j] == 'A' for j in range(n)):
            ans += 1
    for i in range(n):
        if all(arr[j][i] == 'A' for j in range(n)):
            ans += 1
    if all(arr[i][i] == 'A' for i in range(n)):
        ans += 1
    if all(arr[i][n-i-1] == 'A' for i in range(n)):
        ans += 1
    return ans


def main():
    n = int(input())
    arr = [list(input()) for _ in range(n)]
    ans = 0
    for i in range(n):
        for j in range(n):
            if arr[i][j] == '.':
                arr[i][j] = 'A'
                ans += is_bingo(n, arr)
                arr[i][j] = '.'
    print(ans)


if __name__ == '__main__':
    main()