doraimota's blog

By doraimota, history, 7 days ago, In English

I Didn't Knows I Donot Let My Friend Help Before And Now I Confess I Cheated In My First Contest Please Forgive Me Thanks Community

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By doraimota, history, 10 days ago, In English

I think I'm too weak to do contests on my own and need my friend to accompany me when I'm doing a contest, but he refuses to help. What should I do in this case?

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By doraimota, history, 12 days ago, In English

My friend can Send as Much Comments he want, But I Only can Send One Message per 10 Minutes. How to Fix this Issue?

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By doraimota, history, 3 weeks ago, In English

Constructive Problems Are Tricky Especially For Beginners. However Maybe My Post Can Help You.

Meta

  1. Most Constructives Are Based On Some Key Observations, Not on The Construction itself, Which Is Same as Other Questions. If You Have Tried some Simple Constructions but Doesnot work for The PRoblem, Maybe try to Observe the Statement and gather Some Invariants.

  2. If The whole Question seems Hard, Try to Add some limitations Yourself First, or try To Solve the Question in Smaller Constraints first. tHe whole construction might Be just a Tweak of The construction With extra Limitations.

  3. Try Not to Think that One Question must BE solve by Intended Solution. The Questions sometimes are not only Solvable by One Approach, or Even not only solvable By Approaches based On Same Principle. Sometimes You donot need To Use all Information from Input Either. Some times The Cosntruction is Much more Stupid Then you think.

  4. Try to Simplify The Situation question Offer To you, by using Simpler descripton Or By Deducing Varibles. Other questions Is Same need This.

  5. sometimes You Need to Use Some Techniques like DP in Cosntruction Questions. Donot be atraid to use THem.

  6. IF A Questions Asks You whether a Construction exists, Maybe consider the situations In Which a Valid Construction donot Exist.

Here are Some specific Ideas That I Find USefullest.

About graphs/trees

  1. Most GRaph construction questions Has Nothing To do With the Actual structure of The Graph. Most time its just About The Edge/VErtices Set.

  2. You Might want to Try Out some special Types of Graphs/Trees, such As tournament graphs, binary trees etc. Because These Kind of graphs Have very Good Nature you Might Need. Especially In These questions Where you Are ASked to Minimize/maximize some Times.

  3. Sometimes Constructing The DFS tree First a graph Could Help.

About Sequences

  1. Consider The Differential ARray or prefix Sum array Of The Sequence can help. For PErmutations consider The catsian tree or the graph constructed by connecting $$$i$$$ to $$$p_i$$$ or the inverse premutation. These appear Some What Freq. In Questions.

DONOT DOWNVOTE PEOPLE I SPENT VERY MANY TIME IN THIS BLOG PLS GIVE $$$UP$$$ VOTE

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By doraimota, history, 3 weeks ago, In English

many community members say it's true in many posts, but they dont give reasons regarding it. so i'm here to ask this question.

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By doraimota, history, 4 weeks ago, In English

Given amount of Users and their Codes. Determine which Users are Cheaters while Which are Not Cheaters.

User amount <= 10^5, Code Per User <= 10^3.

First, if Two Code from Two Different Users is same, Two Users Both are Cheaters.

Then, we Iterate All pairs of Users and Iterate All pairs of Codes. If code pair is Same, User Pair are Cheaters.

Finally, we Output Those Users who Are Cheaters.

Code is below:

codes = input ("codes")
users = input ("users")

cheaters = []
for u1 in users:
    for u2 in users:
        for c1 in codes:
            for c2 in codes:
                if c1 == c2 and u1 != u2:
                    cheaters.append(u1)
                    cheaters.append(u2)
print (cheaters)

In real Codeforces Might need to get Users and Codes from DataBase.

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By doraimota, history, 4 weeks ago, In English

People always say Indians are much cheater country, but today I find some japan and USA cheaters, and they also cheat, why they have so much cheaters?

For indian, I know it because cheating helps getting jobs. What about japan and USA?

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By doraimota, history, 5 weeks ago, In English

Due To The Fact That TPY Doesn't Play Lava Loons Any More, I Decided To Change My Name Into Something

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By doraimota, history, 5 weeks ago, In English

For Example I Can Solve 4 Problems In Div 2 Contest Now How Much My Rating Will Increase If I Solve 5 In Next Div.2 Contest

And How Good I Should Be To Do Div.1 i.e. How Much Problems Should I Solve In Div.2 To Be Able To Do That

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By doraimota, history, 6 weeks ago, In English

Go study and prepare for JEE for one year (regardless of your country). Then you restart this challenge.

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By doraimota, history, 2 months ago, In English

Is that the reason that contests nowadays are so few? I want more contests!!! And why I still cannot see Goodbye 2024 on contest board???? Even Luogu holds contests per every 3 days!!

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By doraimota, history, 2 months ago, In English

If you cheat you destroy Codeforces so donot cheat!!! Make Codeforces Great Again!!! If you cheat you have no mom no dad and your whole family will suck!!!!!! Fu.ck Cheaters!!!!!

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By doraimota, history, 2 months ago, In English

if you are like me and get downvotes on litreally every comment it means your rating is not high enough!!! So you must solve problems and it will increase!

I am going to solve some problems and my contribution will very very high if my rating gets higher!!!

Also you can upvote my blogs so I will upvote your all blogs and comments!

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By doraimota, history, 2 months ago, In English

if u donot debug it out urself u won't improve that's truth but many people still ask for debugging and trash the blog section dont destroy codeforces please!!!!!!!!! Long live the great codeforces fu.ck debuggeres!!!!!

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By doraimota, history, 2 months ago, In English

Recently there has been lots of trolling blogs. We should work together to stop them from trashing this website. If we donot after years Codeforces will be destroyed!!!

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By doraimota, 2 months ago, In English

Orz to ZengDingjun_EggArmy. He can beat me in any aspects of life. I'm getting serious illness because of this distress. Please help.

His real rating, ex-real rating, ext. ex-real rating, ext. ex-real rating pro is all higher than me. His contribution is more absolute than me. His rating is more unique than me. He has a much more successful life than me. He always beat me in official contests. He even took the name I want to be.

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