Mr Max , Mr Sum and Mr Count are three neighbours. They have a common enemy, an old man living in the building opposite to them who disturbs everyone with his loud music every morning. So they have decided to break into his house and destroy the music player. One day they went inside his house while he was sleeping and found a mysterious box. When they opened the box, they saw a paper with a function written on it. As they read it out loud, it changed their lives forever. Now, you are also given that function. Let’s see if you can change your life as well.
This is a companion discussion topic for the original entry at https://toph.co/p/mr-max-count-sum