class Solution {
public:

    int rob(vector<int>& nums) {
        int n = nums.size();
        vector<int> f(n,0);
        vector<int> g(n,0);
        f[0] = nums[0];
        for(int i=1;i<n;i++)
        {
         
            f[i] = nums[i] + g[i-1];
            g[i] = max(f[i-1],g[i-1]);
            
        }

        return f[n-1]>g[n-1] ? f[n-1] : g[n-1];
    }
};