Advent of Code 2022 Day 11 (#4/#3) Walk-Through

Please attempt the problem on your own before watching this video!

[TheFrogfather]

This is by far the clearest explanation of part two I've come across. Thanks!

[random]

I learned a lot of nice tricks while watching this!

[milankovacs]

You're very good at explaining something I'd have no clue about

[turboblitz]

Nice I didn't think about the eval(), wrote an operate() function instead that used if else statements and parsed the input before 😂

[avi]

just a note for part 2:
if you're working with a statically typed language like c or c++, use int64_t instead of int, modular arithmetic isn't enough.

[hyperbolia-]

I'm quite late for this (a year) but another solution that gets the job done infinitely quicker for part 2 is, before the monkey throws the item to the next, make the item the modulus of the LCM of all the divisibility tests.

[SqueezeWizard]

The property is x % a = (x % (a * b)) % a