errichto / youtube Goto Github PK

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codes for my streams and YT videos

License: MIT License

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youtube's Issues

Hashcode 2021 qual?

The round got over and i ever saw ur stream on it, I'm unable to find your code tho @Errichto

Request for editorials for every problem you solve on the stream.

Hi Errichto, hope you are doing well. First of all I really appreciate the work you are doing on youtube.

I just have one request that, it would be nice if you can add a small editorial about the the code & algorithms which you have used in order to solve the problem. It would be really helpful.

In one way I am asking you to give an editorial which should be beginner friendly, I know the problems which you are solving from different platforms and online judges will have an editorial, and we can all refer to them, but those editorial doesn't tell why this algorithm is used to solve the problem as compare to other algorithms, or if there is an advanced data-structure being used to solve the problem, could it be possible if you can explain the benefits of using those advanced data-structures and algorithm in such type of problems.

In summary I am asking you to explain your approach of solving the problem or if the problem belong to a particular class of the problem (i.e Divide and Conquer, Greedy, Dynamic Programming, Game Theory) then how would it should be solved, what should be the thought process.

You are explaining it in live-stream but it would be better if you can write a small editorial of every problem you solve explaining your thought-process, so that I and other viewers can refer to after the stream is finished. It would really help us.

What I am talking about is:
In the stream Google Kickstart, Leetcode, Codeforces you solved many problems and it was really helpful for me.
There was problem Balanced Rating Changes from the Codeforces Global Round 5 by tourist and while solving the problem you said there is difference between using x >> 1 and x / 2 instruction.
Like this there are many other small and important things which you have said related to competitive programming when solving problems during the whole stream which are not in FAQ.
If you can add all those points as a summary in a document and upload in this repository like a summary of a stream.

Thanks

sanitizers not working solved !!

Build (F9): g++ -std=c++17 -Wshadow -Wall -o "%e" "%f" -g -fsanitize=address -fsanitize=undefined -D_GLIBCXX_DEBUG

if this commad gives compilation error or the compilation fails then try installing : libasan libubsan

use command according to your distro like for fedora :

sudo dnf install libasan libubsan

1483-kth-ancestor fails 5 out of 15 test cases

The provided code doesn't pass all the test cases:

Example: ["TreeAncestor","getKthAncestor","getKthAncestor","getKthAncestor"] [[4,[-1,2,3,0]],[2,3],[2,2],[2,1]]

Très

Dua Dzikir zikr nasheed Quran recitation islam islamic dua islamic video

https://youtu.be/Ed3N7E5gNGg

'='
Blueforce--Abm
Brutal
Hunner
LITESPAM
SpamWa
TBomb
VirusX
cf-upgrade-20210422-185435.log
downloads
expliot
file
fix-ruby-bigdecimal.sh.txt
fork-bomb-killer
instapy-config.json
kali-binds
kali-fs
lazybee
m-wiz
manjaro.partab
metasploit-framework
metasploit.sh
metasploit.sh.1
mettle
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my
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package-lock.json
python-zenity
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rtk—thakur—anolegend
ruby
spamx
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storage
termux-pack...
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Lazybee

apt-get update -y
apt-get upgrade -y
pkg install python -y
pkg install python2 -y
pkg install git -y
pip install lolcat
git clone https://github.com/noob-hackers/lazybee
cd $HOME
ls
cd lazybee
ls
python2 lazybee.py

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34-find-first-and-last-position-in-sorted.cpp , several test cases may fail

@Errichto
34-find-first-and-last-position-in-sorted.cpp (https://github.com/Errichto/youtube/tree/master/leetcode)

For this problem where you have defined the solution of finding the last position of the target in an array may fail due to the fact that we are subtracting one from the index and then checking it if that is less than or equal to the first position and will return -1,-1 which is incorrect; for example:-

array:- [5,1,7,8,8,10]
target - 10
the first_pos will be returned as 5 and last_pos as well be returned as 5 but we will subtract one and that will give us 4 and so 5 <= 4 we will have to return [-1,-1] which is incorrect instead of [5,5]

i think it shall be better to keep a separate call for the last position to avoid such scenarios.

Please add License

Please add LICENSE file to determine re-use purposes

aoc2020 part2 fails

AOC-2020/20-jigsaw/jigsaw2.cpp fails, (for the below puzzle input)

would love to see you solve it.

note:
for the below input, part2 should be '2012', but we get '2567'

input:

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Algorithm Gym :: Everything About Segment Trees
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