Took me a whole night to solve the question and it turns out that it was copied! Did not expect this really. It takes a lot of hard work to arrive at a solution, please make sure the efforts don’t go in vain next time.

# They removed TANDON!

It took me 2 days to arrive at its solution as well. Though I didn’t submit. Fml.

Goodbye TANDON !!!…

Does anyone know where was it copied from??

Ironical how this time one of the problem setters itself was involved in plagiarism

Its third day and they removed it now. RIP CC.

Will they get a rating drop as well?

Doh - and I was 10 seconds away from solving it

Or probably give us all an increase. Bonus points anyone?

That won’t matter🤣 rating system is relative

I know right. But at least we can brag about it

Ab jisne nhi bhi kiya hoga, vo bhi bolega,mera hone hi waala tha, so easy,etc…

Last year, in **OCTOBER** challenge, they removed challenge problem after extending it for a week.

This year in **OCTOBER** challenge, TANDON removed.

RIP OCTOBER.

bahut is easy tha bhai dekthe hi code kar diya tha lol

Haan, bhai, k=7 ko dekhte hi ek second mai code likh diya tha maine toh…

Maine toh pseudo code hi submit kar diya aur 100pts !…Easy question

I solved it for all the K but 7.

Now that it has been removed, could someone explain the divisibility criteria used for K = 7?

Guess what? Maine toh question hi submit kar diya aur AC! Plagiarism mein plagiarism. Nesting hacked

For k=7, we make 6-different matrices of size-49cross49, then do matrix exponentiation of each of them, after that multiply all of them to get a(0)(0)… All hard work went to vain…

All other k’s in the questions were a joke. Only thing to solve was for k=7