yeah shit was hard. Questions:\n\n![image](https://assets.leetcode.com/users/images/8afeede9-7d4c-48ee-8a7a-d257131c8a70_1633550428.4866157.jpeg)\n![image](https://assets.leetcode.com/users/images/7bf864c2-dd11-4ccd-9871-68ebc7b1925c_1633550428.8054407.jpeg)\n![image](https://assets.leetcode.com/users/images/dc7703cc-6aff-4d26-881c-f8e3d87f1a6d_1633550428.7425206.jpeg)\n![image](https://assets.leetcode.com/users/images/5e694980-887c-4806-b65b-2b7ac08255c7_1633550429.3177297.png)\n

yeah shit was hard. Questions:\n\n\n\n\n\n