class Solution:
def countBattleships(self, board: List[List[str]]) -> int:
if len(board) == 0:
return 0
count = 0
for i in range(len(board)):
for j in range(len(board[0])):
if board[i][j] == '.':
continue
if i > 0 and board[i-1][j] == 'X':
continue
if j > 0 and board[i][j-1] == 'X':
continue
count += 1
return count