#coding:utf-8
#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param nums int整型一维数组 
# @return int整型
#
class Solution:
    def rob(self , nums ):
        # write code here
        if not nums:
            return 0
        if len(nums)<3:
            return max(nums)
        m = len(nums)
        mark = [0] * m 
        mark[0] = nums[0]
        mark[1] = max(nums[:2])
        for i in range(2,len(nums)):
            mark[i] = max(mark[i-1],mark[i-2]+nums[i])
        return mark[-1]