If you are good at your math and Observation.No one will stop you in contest.I think all are thinking same as well.

I think all problem setters are like Math.

Is it??

CP is related to maths . There are problems in Div-2 which is totally based on Maths, but Div-1 problems will surely test your algorithmic skills .

Yeah…It’s True…!! I belong to Div 2…I saw problems in Div 1 as well…but this time It’s purely based on Math…when I solving one by one…I learn some Math too…funny…!!!

I totally disagree with you . Div -1 problem will surely require some algorithmic knowledge to solve.

I would say a basic observation contest.

Yes specially Intersecting paths and chef and his dish

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Yes man…!! I talking about Div 2…I jus saw Div 1 problems…Those are totally hard for me…!!except 1 and 2.

Intersecting Paths can be solved by a CP coder who knows LCA very well. But I still cannot get How to solve chef and Dish.

Yes, so is it like Div 2 people need to work on their ‘math’ to get to solve pure algorithmic problems.? Last contest (May 19B) had many algorithmic questions and accurate submissions got dramatically dipped after 3-4th problem where as this time they were hight throughout. Observation is important but making a full contest math oriented isn’t fair I believe.

All O(nqlogn) solutions passed for chef and dish Weak test cases gave many people AC

All you gotta do is assume that array has very few numbers with frequency :- 1,2,3

u cant eliminate observation skills frm CP too

all algorithms are based on observation and mathematical skills of someone b4 world knew abt them

And then write an O(nlogn*q) solution I didn’t do this cheap trick cuz I trusted Codechef that the test-cases will be strong

Waiting for official editorial . I want to see that what was the intended solution .

I did not expect so many submission for COOLCHEF or COUNTIT , these two were quite hard problems . FGTREE looks quite easy expected lot more submission.

Solution to both were posted on the internet sadly I know that finding that formula for COUNTIT is very hard…and guess what, just some hours ago, I saw it on the internet COOLCHEF’S AC’S are due to weak cases.

Div 2 was completely pattern and observation based except INTRAPATH.

SUMAGCD’ s solutions was posted on the internet few days ago at 5 different places . It currently has 3000+ views on one of the posts, god knows how many guys copied stuff

And even during the long, so many people were reporting the copy cases. This is more of like a Hard-core-copy-long-challenge. Even INTRAPATH AND LENTMO has solutions on internet

Ps:- I didn’t participate in this Long

CHEFING was easier than SUMAGCD . A score of 700 will not get you rank within top 10 in India but some questions were quite tough. Weak TC are still ok but cheating is not acceptable.

Chefing was easier but had less submissions compared to sumagcd as its solution was not on the internet I guess