mahmoud_osama08's blog

By mahmoud_osama08, history, 8 months ago, In English

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Proof

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By mahmoud_osama08, history, 8 months ago, In English

Today we teach the ability to perform range queries in $$$\mathcal{O}(1)$$$, regardless of the query rekwaired.

Consider $$$Q = [l, r]$$$.

Iterate over all quadraubles $$$\left(a,b,c,d\right)$$$, add $$$Q[a]\times Q[b]\times Q[c] - Q[d]^2$$$

Now to solve single qwery, output $$$\text{Quadruble}[l][r^2][r-l^r][l+r^l]$$$.

The precomputation took $$$\mathcal{O}(1)$$$ time because $$$a,b,c,d\le 10^{18}$$$, a constant

You solve every query in $$$\mathcal{O}(1)$$$ cuz u immediately output the formula.

if you dont trust me, try it in this problem

you can see that my code is fastest ($$$0.00$$$ s)

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By mahmoud_osama08, 19 months ago, In English

the usaco camp has ended actually i have this secret informations from the one and only Benq

actually the ones who will be in internation l olympiads of intormatica who will represant the united statat of amrika are

1- nor 2- Geothermal 3- xzm2024 4- awoo 5- Seryi 6- FerjaniSassi

they have officully qualified to the oio (olympiad international of intormatics), and they will participate offically

lets congratulate zem and wish good result!!

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By mahmoud_osama08, history, 19 months ago, In English

so it seems like many people are struggling to be red

I THINK THIS because you cant even write code

learn from the true red, this is how we write code https://codeforces.me/contest/4/submission/203467882

also people like Um_nik cant even be 1st because like they dont even know wavelet tree??? like it is so easy just make a tree

also a lot of people struggle to get to YELLOW which is the easiest rate to achieve,, because they write recursive segmant tree?? honestly go learn how to code...

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