class Solution:
    def canPlaceFlowers(self, flowerbed, n):
        """
        :type flowerbed: List[int]
        :type n: int
        :rtype: bool
        """
        if n == 0 :
            return True

        # add  10 at first
        # add  01 at last
        connect_0 = 1

        for index, f in enumerate(flowerbed + [0, 1]):
            index += 1
            if f == 0:
                connect_0 += 1
            else:
                connect_0 = 0

            if connect_0 == 3:
                n = n - 1
                connect_0 = 1

            if n == 0:
                return True

        return n <= 0