gatrmani's blog

#21 in Div. 2 Contest Cheating
By gatrmani, 11 days ago, In English

Today I am here to expose cpp200iq for cheating. He recently placed #21 in the last Div 2. contest (Codeforces Round 1007), and it was all due to cheating.

For this contest, he asked his Grandmaster friend to send the solutions during the contest, and he just submitted his friend's solutions. I only know this because he admitted it in one of the competitive programming Discord servers I am a part of. Here are some of the messages he sent:

Please punish him, he thinks he can just get away with cheating!

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Best Debugger for CP
By gatrmani, 12 days ago, In English

Guys what do you think the best debugger for CP is? I use GDB and Ghidra already but i need some more suggestions so i improve my cp speed

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Codeforces needs to switch to React
By gatrmani, history, 3 weeks ago, In English

Why doesn't Mike switch to React so this website looks better? Imagine making a programming website with bad programming.

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Why
By gatrmani, history, 3 weeks ago, In English

why A I is not allowed in codeforce ... all software engineer in Googe , Meta , Amazons use A I now ...

Pls Sir use A I to help make contest and learn Faster ... we need to learn to use A I ... UpVote if you Support

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Codechef vs Codeforces
By gatrmani, history, 4 weeks ago, In English

Sir tell me what is better codechef or codeforce Your title here...

Codechef have many good ui and courses like beginner ... intermediate advanced ... and made by pro indians , Codeforce dont have course ...

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Elon Musk Posts About Codeforces
By gatrmani, 5 weeks ago, In English

Do you guys agree with him?

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Ultimate competitive programming template
By gatrmani, history, 5 weeks ago, In English

Use this codes in your competitive programming ...

include <bits/stdc++.h>

using namespace std;

int main() { cin.tie(0)->sync_with_stdio(0);

}

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Need someone who can teach me everyday master
By gatrmani, 7 weeks ago, In English

need someone who can teach me every day complex code and math equations and level up in contests fast Greatly Appreciated ... Thank You master

$$$\widehat F(z, t) = \sum_{n\ge 1}\sum_{k=1}^n A_{n,k}\frac{z^nt^k}{n!}$$$
$$$\sum_{j=1}^m \sum_{S \subseteq \{1, 2, \cdots m-1\}} (-1)^{|S|} Q(S, z, t, j)$$$
$$$\left([z^n]\frac{t(\mathrm e^{z(1-t)}-1)}{(1-z) (1-t \mathrm e^{z(1-t)})}\right) + 1 = (1-t)[z^n] \frac 1{(1-z)(1-t\mathrm e^{z(1-t)})}$$$
$$$[z^n]\frac 1{(1-z)(1-t\mathrm e^{z(1-t)})} = (1-t)^n[u^n] \frac1{(1-\frac u{1-t})(1-t\mathrm{e}^u)}$$$
$$$\begin{aligned} (1-t)[z^n] \frac 1{(1-z)(1-t\mathrm e^{z(1-t)})} &= [u^n]\frac{(1-t)^{n+2}}{(1-\frac{t}{1-u})(1-t\mathrm e^u)(1-u)}\\&= (1-t)^{n+2} [u^n] \left(\frac{-\mathrm e^u}{\left(\mathrm e^u u-\mathrm e^u+1\right) \left(1-t \mathrm e^u\right)}+\frac{\frac{1}{1-u}}{\left(\mathrm e^u u-\mathrm e^u+1\right) (1-\frac{t}{1-u})}\right)\end{aligned}$$$
$$$\Delta_{X_{d-1},X_d}\colon K[ [ X_1,\dots,X_d ] ] \to K[ [ X_1,\dots,X_{d-2},U ] ]$$$
$$$\left(\sum_{i_1,\dots,i_d\geq 0} f_{i_1,\dots,i_d} X_1^{i_1}\cdots X_d^{i_d}\right) \mapsto \sum_{i_1,\dots,i_{d-2},j\geq 0} f_{i_1,\dots,i_{d-2},j,j} X_1^{i_1}\cdots X_{d-2}^{i_{d-2}} U^j.$$$
$$$\begin{align*} &\quad \langle g_m(x)(1-x)^m, 1 + \cdots + x^m \rangle\\ &= \sum g_{m,k} \langle x^k(1-x)^m, 1+\cdots+x^m \rangle\\ &= \sum g_{m,k} [x^k] x(x-1)^{m-1}\\ &= \langle g_m(x), x(x-1)^{m-1} \rangle\\ &= \langle h_m(u), x(x-1)^{m-1} \rangle\\ &= \langle h_m(te^t), x(x-1)^{m-1} \rangle. \end{align*}$$$
$$$\begin{align*} &\quad \langle t^k, x(x-1)^{m-1} \rangle\\ &= \left\langle \left(\frac{x}{1-x}\right)^k, x(x-1)^{m-1} \right\rangle\\ &= [x^m]\left(\frac{x}{1-x}\right)^k \cdot (1-x)^{m-1}\\ &= [x^m] x^k (1-x)^{m-k-1}\\ &= [k=m]. \end{align*}$$$
$$$\exp\left( \sum_{k\geq 3} \frac{(n-1)!x^n/2}{n!} \right) = \exp\left(-\frac x 2 - \frac{x^2}4\right)\frac 1{\sqrt{1-x}},$$$
$$$a_n = \frac1{2^{2n}}\sum_{i,j,k} 2^i (-1)^j (-1)^k \binom{n}{i,j,k,n-i-j-k}2^i2^{2j}\binom{n-i-j}{k} k! 2^k (2n-2i-j-2k)!$$$
$$$f(x) = \sum_{i=1}^{n-1} f(q^i) \frac{\prod_{j=0}^{n-1} (x-q^j)}{(x-q^i) \prod_{j\in \{0,\dots,\overline i,\dots,n-1\}} (q^i-q^j)},$$$
$$$\sum_i q_i(t-1) \partial_t^i F_1 = \sum_{1\leq j\leq \ell} \epsilon_j (t-1)^{k+j}.$$$

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it starts here ... no more chatgpt
By gatrmani, 7 weeks ago, In English

i will ace all questions in google and meta interview one day ... it starts here ... i will grind all questions every day ... no chatgpt during practice for discipline ... only chatgpt in contests ... wish me luck

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you guys all don't shower and smell bad
By gatrmani, history, 2 months ago, In English

bunch of nerds in here. go take a shower

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Use AI to Write Contests
By gatrmani, history, 2 months ago, In English

Hi guys I thought of a good idea. What if we use AI to write contests, so we don't have to wait a century between each contest. We need to embrace AI not reject it.

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Best Code I've Written
By gatrmani, history, 2 months ago, In English

Hi guys i would like to share the best code ive ever written

#include<bits/stdc++.h>
using namespace std;
int gyat,i,was,in,ohio,before,I,met,you,ii,rizzed,too,much,andd,thats,an,issue,but,im,grimace,shake,rizzler[101];
int fanum,taxing,sigma;
      int main(){
                  cin>>gyat;
        while(gyat--){cin>>ohio; 
map<int,int>boyitsjustalcohol;
                            for(grimace=0;grimace<ohio;grimace++){cin>>rizzler[grimace];boyitsjustalcohol[rizzler[grimace]]++;}
              fanum=taxing=0;for(auto[livvy,dunne]:boyitsjustalcohol){taxing=dunne/3;fanum+=taxing;}cout<<fanum<<endl;
        }
}

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huge news
By gatrmani, history, 3 months ago, In English

mike (creator of codeforces) has been rigging contests for tourist. according to sources, he was giving tourist early access to the problems before the contests, so he solved all the problems before it even started. i heard mike did this because he thought it would be good for tourist to get 4k since it would boost the popularity of the website, as he is the most popular cper in the world. does mike deserve to get fired for this let me know in the comments

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