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My friend asked me about "how would you scale the game matchmaking system". This is actually a very good system design.
I have no idea of the requirements, but this is something that I came up with in 15 mins.
A lot of stuff here are out of scope and missed

Concept is a bit similar to "Virtual queue" in Ticket Master system design. When you have shared sorted set and need to pop N out of them

Daily

Was very hard for me, was not able to come up with simulation even, cause, I'm not sure, just my brain cannot handle the simulation variables in head at the same time (ongoing potions, busy/notbusy mages).

But there is one picture that helps for building the simulation a lot (check comments)

https://leetcode.com/problems/find-the-minimum-amount-of-time-to-brew-potions/description/?envType=daily-question&envId=2025-10-09

#daily

let's give kudos to Max, the creator of the meme ❤️❤️❤️

Daily

Today is solid, good, not hard DP problem. Love it. Go and collect the point.

https://leetcode.com/problems/taking-maximum-energy-from-the-mystic-dungeon/description/?envType=daily-question&envId=2025-10-10

#daily #medium

Daily

https://leetcode.com/problems/maximum-total-damage-with-spell-casting/?envType=daily-question&envId=2025-10-11

Solid DP problem, which requires a bit of smartness

Description understanding helper: not power[i -1], power[i - 2], ... BUT INSTEAD power[i] - 1, power[i] - 2. It saved me a lot of time.

#daily #mid #dp

Not sure why they didn't give me 35?

AHA, I got it, I should join both.
And the problem that one of them is today 16:00 UTC + 2, another one is 4:00 AM UTC + 2

35 coins for waking up at 4:00 AM?? no, thanks.

King’s Landing, Westeros

Daily

Today is trash problem, don't even fucking spend your time on it

https://leetcode.com/problems/find-sum-of-array-product-of-magical-sequences/description/?envType=daily-question&envId=2025-10-12

#daily #hard #trash

Nothing makes my Monday happier than easy 5 mins leetcode problem, without dumb nonsense with N, K, M, 2 ^ K

Daily

Easy, go and collect coins.

https://leetcode.com/problems/find-resultant-array-after-removing-anagrams/description/?envType=daily-question&envId=2025-10-13


#daily

I wasn't joking, it is coming. I will need your technical review soon

was talking about AI with colleagues, tell me, do you see cycle in this graph ??????????😁

Daily

Should me mid actually, especially for 46% acceptance rate. And this is quite cool problem, go and collect the coin

https://leetcode.com/problems/adjacent-increasing-subarrays-detection-i/description/?envType=daily-question&envId=2025-10-14

#daily #easy

https://www.youtube.com/watch?v=o2s8I6yBrxE&t=29s

New era - LLM injection. I already see how some guys create some cyber attack by injecting vulnarable shit into bunch of public github repos, and then yeah, and then vibecoders will do the rest of the job😁