@admin couple of months ago I got a mail from neha help@codechef.com about your solution got plag. with another user but I have written explain why our code matches and I provided every proof for the source for the algorithm that published 1-2 years before the contest and even after I did not get any reply I wrote 2-3 mail to help@codechef.com still no replies please look into my situation.
(APRIL20A)
I did not see admin’s reply on any of the links. What I understood is people have been using this strategy for a long time for preparation of ICPC. I still feel it’s not fair.
@admin, Each one of them copied the same code of SKMP.
They think that stars on their profile matters, Lol!
All linked submission should get penalised and I want the names to be public so that they will never cheat in future.
Cheater Usernames:-
@unexh @bellatrix_bae @klu_180030911 @lalasa_30882 @pranay_84
https://www.codechef.com/viewsolution/36852626
https://www.codechef.com/viewsolution/36857687
https://www.codechef.com/viewsolution/36857565
https://www.codechef.com/viewsolution/36857443
https://www.codechef.com/viewsolution/36857439
3 Likes
Recently I was visiting submissions of top rankers from August Long 2020 to see their coding style and i got stuck at a place and what i saw was hilarious !
I have seen this account and his submissions and thought why these submissions are not detected by MOSS . He wrote 2000 lines of code(see this) and his main logic was only of 100 lines and he had 1900 lines of template which even consists of singly linked list . Have you ever seen any singly linked list question in any contest 
?
Moreover, during practise he writes only 40 lines of code without template and in long he goes for 2000 lines(beyond imagination) and if you observe his main code he has many unnecessary loops and actions which is not part of his main code . If I talk about his accuracy , it is beyond imagination, he has all codes AC in one go in all long challenges .
This man has really tested the codechef MOSS . He has given codechef very nice test data to test their MOSS 
This was the most hilarious account and cheating which I ever found .Worst part is that he is in Divison 1 
.
All this indicates mal-practise which ultimately demotivates to code on codechef . Please take necessary and immediate actions .
Admin told me to use this topic to report this account here and what I found I am just telling to the community . Now it depends on codechef to see how to deal with such practise .
@admin @taran_1407 @admin123 @viju123 @l_returns @iron_specter
2 Likes
No I do not have any other alternative. MOSS has it’s limitations, that’s fine. My only point of curosity was why Codechef has mentioned this in the code of conduct. It is one thing to accept something as a limitation of the system, it’s another to allow something. I am very sure Codechef hasn’t inluded this for NK winners. I tagged admin to know that but seeing your blog I am convinced the admin is not interested in explaining this. IMO we can not stop anyone from participating as a team but it shouldn’t be in the code of conduct only because it can not be stopped.
2 Likes
Hello admins,
I am checking the solutions of some students whose codes are fully submitted then I got there are many students who are coping code of each other and only change is making some extra import or changing the variable name but the concept is the same. this act disappoints me a lot felt like how much spam is going on. The name of competitive coding is going down. The true coders are not getting the opportunity due to these type of people.
for geting good rating they can do anything
i am not getting this thing because when it comes to do such work in job then how will they do then they got stuck then they understand the importance of real work
people like us working hard to excel and to get good rating but cheater like this people are spoiling all the environement and demotivating the fellow coders.
https://www.codechef.com/viewsolution/36637834
https://www.codechef.com/viewsolution/36855811
https://www.codechef.com/viewsolution/36856406
https://www.codechef.com/viewsolution/36855815
https://www.codechef.com/viewsolution/36855601
https://www.codechef.com/viewsolution/36856276
https://www.codechef.com/viewsolution/36857613
https://www.codechef.com/viewsolution/36856576
https://www.codechef.com/viewsolution/36856669
https://www.codechef.com/viewsolution/36856671
https://www.codechef.com/viewsolution/36856723
https://www.codechef.com/viewsolution/36856801
https://www.codechef.com/viewsolution/36856946
https://www.codechef.com/viewsolution/36857617
https://www.codechef.com/viewsolution/36857648
https://www.codechef.com/viewsolution/36857682
https://www.codechef.com/viewsolution/36856609
https://www.codechef.com/viewsolution/36857732
https://www.codechef.com/viewsolution/36856027
https://www.codechef.com/viewsolution/36532112 1
https://www.codechef.com/viewsolution/36856748 1
https://www.codechef.com/viewsolution/36856877
https://www.codechef.com/viewsolution/36857759 1
https://www.codechef.com/viewsolution/36856579
https://www.codechef.com/viewsolution/36856579
https://www.codechef.com/viewsolution/36856386
https://www.codechef.com/viewsolution/36856187 1
Yeah, such submissions are against the code of conduct. I am not sure whether @admin has time to penalize such submissions.
That was insane man… don’t worry he got marks for his creativity 
Hey @john_smith_3 Could u plz tell what is in the code? I am not able to understand it, how it got passed?
Just run it through the pre-processor (gcc -E) to see 
Here’s the output of doing that; cutting out all the boring stuff; then pretty-ing it up:
[simon@simon-laptop][17:15:44]
[~/devel/hackerrank/otherpeoples]>gcc -E revin_99-ACCBIP.cpp | sed -ne '/using namespace std;/,$ p' | grep -v "^#" | clang-format
using namespace std;
long long int fun(long long int num, int colour,
vector<long long int> lines_set[]) {
vector<long long int> lines = lines_set[colour];
for (long long int i = 0; i < lines.size() && num > 0; i++) {
long long int temp = min(lines[i], num);
lines[i] = lines[i] - temp;
num = num - temp;
}
if (num > 0) {
return 0;
}
long long int sum1 = 0;
long long int k = lines.size();
for (int i = 0; i < k; i++)
sum1 += lines[i];
long long int sum2 = 0;
long long int temp[k + 1];
for (long long int i = 0; i < k; i++) {
temp[i] = lines[i] * (sum1 - lines[i]);
sum2 += temp[i];
}
sum2 /= 2;
long long int sum3 = 0;
for (long long int i = 0; i < k; i++)
sum3 += lines[i] * (sum2 - temp[i]);
sum3 /= 3;
return sum3;
}
int main() {
long long int t;
cin >> t;
while (t--) {
long long int N, C, K;
cin >> N >> C >> K;
unordered_map<long long int, int> colour[C + 1];
vector<long long int> lines[C + 1];
for (int i = 1; i <= N; i++) {
long long int a, b, col;
cin >> a >> b >> col;
colour[col][a]++;
}
long long int V[C + 1] = {0};
for (long long int i = 1; i <= C; i++) {
cin >> V[i];
}
for (long long int i = 1; i <= C; i++) {
vector<long long int> lines_set;
for (auto it : colour[i]) {
lines_set.push_back(it.second);
}
sort(lines_set.begin(), lines_set.end());
lines[i] = lines_set;
}
long long int dp[K + 1][C + 1];
long long int fun_mem[K + 1][C + 1];
for (int i = 0; i <= K; i++) {
for (long long int j = 0; j <= C; j++) {
dp[i][j] = 0x7fffffffffffffffLL;
if (j == 0) {
dp[i][j] = 0;
}
fun_mem[i][j] = -1;
}
}
for (long long int i = 0; i <= K; i++) {
for (long long int j = 1; j <= C; j++) {
long long int max_lines_rem = i / V[j];
for (long long int k = 0; k <= max_lines_rem; k++) {
long long int val_rem = k * V[j];
if (fun_mem[k][j] == -1) {
fun_mem[k][j] = fun(k, j, lines);
}
dp[i][j] = min(dp[i][j], dp[i - val_rem][j - 1] + fun_mem[k][j]);
}
}
}
cout << dp[K][C] << "\n";
}
return 0;
}
5 Likes
I have an appeal; I have been accused of plagiarism; whereas I’m sure I have never used any code not my own or discusses solutions. First off, can someone point me to how to see which problem in which I’ve been accused? On my profile I see only the competitions in which I’m accused. I shall then post further with my appeal.
It is a real account. I was 5 star before this. Check my submission history please.
EDIT; Please also try to avoid any unnecessary hate. I understand that you automaticaly percieve of me as a cheater trying to act innocent but I really am not; well at least give me the benefit of doubt and help me figure out what exactly was flagged.
Also to repeat, this is NOT a fake account. It is on THIS account that I have been accused
Is there any way to see which problems have been flagged?
I am sorry. You can check your email. Codechef sends a mail if you are caught in plagiarism.
Can we have a look at these two solutions?
https://www.codechef.com/viewsolution/27365391
https://www.codechef.com/viewsolution/27358358
@anon34233284
https://www.codechef.com/viewsolution/32944988
https://www.codechef.com/viewsolution/32944932
actually both were my submissions… At that time I just started coding and was not aware of Moss so I made 2 ids for fun and submitted the same code on both when I heard about Moss I myself reported my both ids and deleted both of them.