Was working on it whole day today. Tomorrow Im dropping it here (if oncall is not bad for me).

Daily (304/373 streak until LC cap)

The problem is much much easier than you think. It has a lot of unnecessary details that are irrelevant.

https://leetcode.com/problems/maximum-total-subarray-value-i/description/?envType=daily-question&envId=2026-06-09

#daily #medium #nopattern

Promised - done. This is pretty much polished personal notes that I have gathered over the time. Hopefully will be useful at least for somebody

https://andreyka26.com/ssl-tls-mtls-for-system-design-in-simple-words

Will appreciate feedback/comments.

Overall article creation takes around 12-14 hours usually, which is surprisingly long to me, but it has ZERO AI, everything is written by me, only grammar (missed the/a) is done by AI.

Therefore it might have some mistakes, slightly off information - so let me know, I will update, and mention you in the article as reviewer (always grateful for deep technical review).
BTW this is applied to all my articles, I'm missing review same way as I would miss PR review when doing something myself.

Overtimes, ofc

We both had dinner, now time to sleep

Daily (305/373 streak until LC cap)

As was forecasted yesterday: it is segment tree, and it is hard one.
But with hints + and our segment tree pattern it is not hard to solve.

https://leetcode.com/problems/maximum-total-subarray-value-ii/description/?envType=daily-question&envId=2026-06-10

#daily #hard #pattern

Again, recall this pattern, after doing that I was able to write min/max segment tree in one go.

Putting a reminder: I have a friend who got asked segment tree question in big tech. So it is getting asked.

Btw, this is not company related thing, I drew it, it is kernel network hooks. You all have it on your machine and on your servers

Daily (306/373 streak until LC cap)

Not bad problem, not a bullshit (since graph/tree ofc). But I would still rate as true medium

https://leetcode.com/problems/number-of-ways-to-assign-edge-weights-i/description/?envType=daily-question&envId=2026-06-11

#daily #medium #pattern

Vibe like Jack Sparrow is somewhere inside

Dont worry, daily leetcode will be posted later, now I am fighting with bank to get 100 eur by coins.

Daily is quite interesting follow up from yesterday, that has multiple patterns, so I need a but more time to prep it for you.

After 4 months I eventually got my coins, I am happy

In case you dont know how 100€ in 1eur coins look like - this is how.

Ahhahaha somehow first impression is casino.

I dont know, my experience in Prague was: you go with at least 1k czk(50€), you pay them, you get chips, in the end if you are not me and don’t lose all money in poker - you exchange chips for cash.

Never had to have 1 eur coins for that, but I am interested, maybe I should use it.

Btw this was my first monthly salary as swe in my first company back then in 2018😁

Was enough to eat whole month + free cookies and tea in the office