Battleships in a Board Python Solution

lcpy gen -n 419   # by problem number
lcpy gen -s battleships_in_a_board   # by problem name

Input: board = [["X",".",".","X"],[".",".",".","X"],[".",".",".","X"]]
Output: 2

Input: board = [["."]]
Output: 0

class Solution:
    # Time: O(m * n)
    # Space: O(1)
    def count_battleships(self, board: list[list[str]]) -> int:
        count = 0
        for r, row in enumerate(board):
            for c, cell in enumerate(row):
                if cell != "X":
                    continue
                if r > 0 and board[r - 1][c] == "X":
                    continue
                if c > 0 and row[c - 1] == "X":
                    continue
                count += 1
        return count