06. Knight Game

def read_matrix(s):
    m = []
    for r in range(s):
        txt = input()
        txt_list = []
        for char in txt:
            txt_list.append(char)
        m.append(txt_list)
    return m


def valid_move(move):
    r = move[0]
    c = move[1]
    if r in range(len(matrix)) and c in range(len(matrix)):
        return True
    return False


def remove_k(m, s):
    counter = 0
    for r in range(s):
        for c in range(s):
            current_cell = m[r][c]

            if current_cell == "K":
                move_1 = (r + 2, c + 1)
                move_2 = (r + 2, c - 1)
                move_3 = (r + 1, c + 2)
                move_4 = (r - 1, c + 2)
                move_5 = (r - 2, c + 1)
                move_6 = (r - 2, c - 1)
                move_7 = (r + 1, c - 2)
                move_8 = (r - 1, c - 2)
                moves = [move_1, move_2, move_3, move_4, move_5, move_6, move_7, move_8]
                for move in moves:
                    if valid_move(move):
                        target_cell = m[move[0]][move[1]]
                        if target_cell == current_cell:
                            m[move[0]][move[1]] = "0"
                            counter += 1
    #for r in m:
     #   print(f'{"".join(x for x in r)}')
    return counter


size = int(input())
matrix = read_matrix(size)
print(remove_k(matrix, size))