like u can establish one to one map , between the original array and this a[index] — index array while doing operations .

finally what u want after ops in original array looks like x , x + 1 , x + 2 , x+3 , x+4 , ... , x + n in this set up of subtracting position from the value

how u arrived at whatever eventually , then?

ohh , i c . we can adjust from the down and left the simple L shaped boundary to achieve it

Is D CHT ?

[UPD:] type India and it is found ...

Hi , SecondThread why India country is not available on the tshirt vendor website ? It had been there atleast for some past years.

This is similar to what happened with problem B R2 .

using chebyshev to bound the probability of failure is approx atmax 5 % . under 50 to see it , with 2.5% very low probabiltiy to occur , the 5% is still loose ...

just getting the hint like it is random and exp is really helpful . I somehow reached at (i , q[i]) until i == p[i] with exp == 2 . Even i found exp == 3 in some cases .But the sad part , i could not combine up things to get to (3 + 2)n/2 ... This is nice and intuitive sol , better from less intuitive editorial .

whatever it is , we have to give ours best to it .

U also did not do anything/not even talking abt R2-B problem till now . This is so bad SecondThread

It is completely fair and ok . One side setters/contest authors on cf and otherside , Look at meta hacker cup , what they did accepted wrong solutions for B and did not even appologise with a blog till now .

bruh SecondThread can you pls confirm till when the scoreboard will be freezed ? it seems till round 3 start .

could be . but compiler(the purpose it is there) + good env conditions has the potential to do this .Also , there are several other alternatives (recontest , some relaxations etc) .

Let them decide . What can we do ? It is upto metappl what they want to do ? It is pretty common that ppl with crrt solution goes up after the contenst , that does not seem to happen in B this time that is all .

It is important for ppl who compete for T-shirts (Top 2000) like me .

SecondThread , Please rejudge the solutions as correctness should be the top most priority -- because it is not passing pretests or something , it is abt coming up the best you can and results will be revealed after end of contest .

where it is written ? what abt T — shirts rank ?

ok ok , calm down. It is not so difficult to come up with the idea :) .

yep

what is it — the easy generating function ? The previous D was just bfs .

if ai < l it becomes l and if it is > r , it becomes r .. using fenwick u can compute the sum of numbers which are in [l,r] and you can maintain how many < l and > r no.s in another fenwick .

This is nice . How u come to this conclusion ?

i mean experience or just trying out in live contest[love to hear].

*i mean final length will be O(31*n)

It is sort of related to logarithmic median (not a standard term) . Make a new array = original + all ceils and 2*x from all nums in original . From each element try to reach every other element with ops , add range operation in Operations_store_array . minimum valued accumulated at an index of operations_store_array is ans .

do not agree

In F , feeling was there are lot of contrainsts

cool just because of one problem ?

Me too

https://codeforces.me/blog/entry/98629 + along with linearity of cyclicity destroys E

Also towards med — easy , the F

How do you know abt the wants of so many ppl ?

Nice _Kee . how did you get — what to search on OEIS ?

just check warm-up problem of the 2025 hacker-cup practce

Nice

Problem E is nice . I tried — like extending ans[i] to ans[i+1] from left to right , right to left . consider all mexs . iterating from left to right . form segments of the bigger number increasing the answer ; nothing properly clicked like the stuff being done in editorial . Thanks .

I also want the same .Lets us see who achieves it faster .

i think -i am also on the same way ,why binary search will not work with lazy seg assuming no tles??

Thanks , it is indeed very helpful.

Hoping to get nearby ratings

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