No worries. Sandro is the name of one of the playable necromancer characters in the game ;P https://vignette.wikia.nocookie.net/mightandmagic/images/5/52/HeroSandroII.jpg/revision/latest?cb=20100308151810&path-prefix=en

hi sandro i dont know c++ so maybe this will help you maybe not... the description was written for python and i guess some of the definitions arent explained for c++ very well. the input in c++ would be a monster type tuple such as "typedef tuple<string, int, int, int> MonsterGroup;" where the variables are the type, hitpoints, number, and damage respectively. calling "get<1>([MONSTER])" would then return the hitpoints.
hope this helped

I don't know C++, but it looks like the monster pairs are being stored as a set of tuples within a tuple?

Make sure you're catching these cases:

If the array of arrays is null/nil or empty, the method should return 0.

When an array in the array is null or empty, the method should return 0 too!

I dunno C++ version but in javascript (and probably other languages) there are tests where the shortest array's length isn't 1.
I'm not sure but if the code follows the description there should be only one array missing.