[Community Puzzle] String Balls II

Puzzles
#1

Coding Games and Programming Challenges to Code Better

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Created by @Timinator,validated by @Datascientist07,@Lanfeust and @anon35447058.
If you have any issues, feel free to ping them.

#2

I’m stuck on the last two test cases… I have no idea how to handle such large inputs. I’ve learnt so many things and I’m so close, but not close enough.

#3

Just the last two test cases? Are you getting the wrong answer or are you timing out?

#4

@Timinator
I’m timing out. And using Python.

#5

I will send a PM.