Qualified's blog

Happiest moment on CF?
By Qualified, history, 5 years ago, In English

Mine was when I got a +45 rating change. Although that isn't a lot, I finally improved. Look at rating graph, kinda trash. I want to hear yours.

  • Vote: I like it
  • +22
  • Vote: I do not like it

Comments Comments (44)
| Write comment?
»
5 years ago, # |
  Vote: I like it +13 Vote: I do not like it

Happiest moment on CF is definitely when you solve one more problem than you even imagined, for me it was the previous div2 contest.

I was able to reach 1580 by participating in div4 and div3 because my seniors suggested it's a good time to participate for beginners. But when I gave div2 contest, I wasn't able to solve even a single question(I choked) and lost rating over a 100. So in this contest I had my aim set to first 3 questions and surprisingly I was able to solve 4 questions and gainee my best rating, truly earned +148. It wasn't a div3/4 scam. (Yes I do think that div3/4 are not that good since I read CF blogs so much :D)

→ Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    In the previous Div.2 contest, I also did my best, but only managed to do half as many problems as you did. Nice!

    → Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it +13 Vote: I do not like it

    Last div2 was easier than most of the div2 contests held.

    → Reply
»
5 years ago, # |
  Vote: I like it +52 Vote: I do not like it

When a desperate guy messaged me thinking I'm a girl(because of my profile pic XD).I laughed until my stomach started hurting! I was like why don't they declare Codeforces as Tinder for programmers. ;)

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

I can see this post adding a lot of value to the community. What kind of Instagrammy BS is this?

→ Reply
  • »
    »
    5 years ago, # ^ |
      Vote: I like it +29 Vote: I do not like it

    I am against shitposting but can feel him. I remember myself, when I was placed high in a Div2 round, overwhelmed with happiness and excitement — to a level when I posted something similar, or even worse, flexing on how good I am — and got heavily downvoted (totally deserved).

    → Reply
»
5 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Mine was getting my first ever problem right on a CF contest. (It was a Div. 3 A problem but it was a CF problem, after all)

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Round 544 ( Div.3 )

Ranked 139. +128.

This was the first contest I became an Expert.

I've solved 5 problems in this round, including the last problem.

→ Reply
»
5 years ago, # |
  Vote: I like it +41 Vote: I do not like it

when friends talk shit after passing pretests then get rekt during system tests

→ Reply
»
5 years ago, # |
  Vote: I like it +21 Vote: I do not like it

when solving less than 3 problems in 10 contests in a row and suddenly hit 5 problems in the next contest

→ Reply
»
5 years ago, # |
← Rev. 2   Vote: I like it -15 Vote: I do not like it

Solving all problems in a Div. 3 contest (Unfortunately it was on an alt so I couldn't get the rating)

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

There is no happiest moment yet :(

→ Reply
»
5 years ago, # |
  Vote: I like it +51 Vote: I do not like it

Mine was when my first own round was finished successfully and saw many people saying that they enjoyed it. That was the major reason why I prepared the round for months.

→ Reply
»
5 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Opened D (https://codeforces.net/contest/1038/problem/D) at the beginning of a Div2 Round, just for looking at it. Realised it is easy then I was tingling in excitement and after it passed pretests, I was extremely happy :D

→ Reply
  • »
    »
    5 years ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    Mines was my first Div. 2 QD "Accepted" verdict! :D

    For the past few times I either failed on system tests (which was discouraging) or can't think of an algorithm. In Codeforces Round #647, I finally got my first Accepted verdict on QD and got +96 rating :D

    I'm new to CF, maybe I didn't have that many happy moments compared to other people, but that round was really happy for me.

    I'm hoping for greater improvements and getting higher ranks in the future!

    → Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

mine did not come yet, it will be the moment when i will become expert :(

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

On last cf round, I have solved 4 problems!!!! I am very happy about it, I hope I will become expert sometime!!!

→ Reply
»
5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Have a successful hack in a div.2 round.

→ Reply
»
5 years ago, # |
  Vote: I like it +13 Vote: I do not like it

when I became Master

→ Reply
»
5 years ago, # |
  Vote: I like it +9 Vote: I do not like it

When I solved a problem with difficulty 2600.

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it +8 Vote: I do not like it

Gettint rank 56 in division when I was purple.

Sadly after that I never entered top 60 in div.1 rounds.

→ Reply
»
4 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Solving E before solving C in a Div 2 round(Thanks to combinatorics)

→ Reply
»
4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Registration

→ Reply
»
4 years ago, # |
  Vote: I like it +18 Vote: I do not like it

→ Reply
»
4 years ago, # |
  Vote: I like it +1 Vote: I do not like it

When I hit specialist for the first time

Managed to solve 4 questions in a Div.3 and I kid you not when I say that it took every single brain cell of mine to solve the 4th one , was about to quit on it when an idea struck me in the washroom....

Also , I do believe that on this path of CP , one of the most happiest moments occur when you are in the grey/green region , because you want the next colour so bad that you can almost taste it

→ Reply
»
4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

When I became specialist for the first time(till now). still i can remember clearly that Edu. round 89.

Spoiler
→ Reply
»
4 years ago, # |
  Vote: I like it 0 Vote: I do not like it

solving 4 problem in div 3 haha

→ Reply
»
4 years ago, # |
  Vote: I like it 0 Vote: I do not like it

If I get green color in the next contest it will be my happiest moment. I need +4 rating change for that.

→ Reply
»
4 years ago, # |
  Vote: I like it +4 Vote: I do not like it

when i came to know that, i was the first to solve D in Educational Round 87.

→ Reply
»
4 years ago, # |
  Vote: I like it +5 Vote: I do not like it

1178F1 - Short Colorful Strip

This problem.

SPOILERS AHEAD

I tried this problem for 2 and a half COMPLETE days. I tried soooooo many approaches. Wrote code 3 times which were completely wrong. You know that feeling when you think that you solved the problem, only to think more and realise that your solution is complete garbage? I had that feeling thrice for the same problem over two days. I couldn't sleep at night. My heart was sooo heavy. I had never been sadder in my life..

But yesterday, at 2:30 in the night, I thought of a new way to approach this problem. I was thinking of combinatorics DP but there was so much chaos that I became convinced that any approach which uses this at a high level is bound to fail. Then I remembered: when there is chaos, brute force is always the answer. But this problem reeks of DP? So what is brute force + DP? Divide and Conquer, of course!

I tried out a brute force recursion and then immediately thought of a way to memoize it using DP. While I coded it, I was feeling so much gratitude towards life and CP in general until........IT TURNED OUT TO BE $$$O(n^{4})$$$.

Now now, I can't give up, I said to myself. If I have got a solution which works for $$$n\leq100$$$, extending it to $$$500$$$ must not be very hard. But it was already 3:30 now, so I went to sleep.

I woke up to a very bad dream today in the morning, maybe because I was too stressed out because of the problem. I tried to optimize my code further. I wasn't able to do it. Frustration grew. I was thinking: maybe it is time to give up....

But then I thought: wait, there is symmetry in the $$$gap[i][j]$$$ dp in my code and choosing any left range goes with any right range. This allows $$$O(n)$$$ optimisation inside the dp calculation loop!!!

And then, I almost cried.

I had never spent so long on some problem. I usually see the editorial after a day of struggling. But this, this problem challenged me to my core, both emotionally and mentally. It is possible that I have solved some harder problems before, but solving this problem was the happiest I have ever felt on Codeforces, and maybe even in my life.

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it +20 Vote: I do not like it

Probably the time when I solved my first Div2F in contest with about 30 seconds on the clock, I got +216 rating and moved to CM

https://codeforces.net/submissions/Omer223/contest/1369

→ Reply
»
4 years ago, # |
  Vote: I like it 0 Vote: I do not like it

What I thought would have been my happiest moment turned out to be my worst moment on CF.

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it -12 Vote: I do not like it

.

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it -13 Vote: I do not like it

When I finally solved Switch Grass. It took me two whole days of implementation, and I was so proud of myself after I solved it.

The comments in my code were truly a roller coaster of emotions.

My code after first day of implementation
My code after I finally got AC! :)
→ Reply
»
4 years ago, # |
  Vote: I like it +62 Vote: I do not like it

My happiest moment on CF was when I participated in Educational Round 83, because I was born on 1383 (I'm living in Iran and our calendar is Hijri Shamsi calendar)

my rate was 1783 when I participated Educational Round 83 and I earned +116. that's why it was very interesting for me, although I got 1899 and I didn't catch Candidate Master.

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it +4 Vote: I do not like it

I have waited for like a month to post this comment.I have finally achieved Expert my happiest moment ever!! (This is my first comment as an Expert :D)

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

When I spent a week to solve one of the hardest problems on codeforces (1336F), finally submitted and after a few seconds reloaded the page, it showed "Running on test 70".

→ Reply
»
4 years ago, # |
← Rev. 2   Vote: I like it +13 Vote: I do not like it

when i first become CM or GM.

hard to choose between those two since i still remember i was so happy that i couldn't sleep well for couple days.

→ Reply
»
4 years ago, # |
  Vote: I like it 0 Vote: I do not like it

I don't know whether being the first solver is a special thing for everyone. But mine was when I first solve 1375E - Inversion SwapSort during the contest. That problem become my only first-solve problem so far on CF

→ Reply
»
4 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Mine would be solving 3 questions in a div2 round which was held yesterday, I had never solved 3 questions before.. so it felt good.

→ Reply