Exercise 0: https://docs.google.com/document/d/1caOysish3-CUXpiqmKoo9Inp991AigjS2BR3mleZclw/edit?usp=sharing
Exercise 1: https://docs.google.com/document/d/18jJn9vkdpYPi3I_p7lCjGk5QPomaJ1joY6pdYuhidbE/edit
Exercise 3: https://docs.google.com/document/d/1hm57sK9LorwaE479MJ8u1Zic0aLdhN2SiFQ6q3q8s24/edit