http://www.infoarena.ro/blog/in4it

http://www.infoarena.ro/blog/linear-algebra

@Bogdan, ) misto. Ma lasa memoria , stiam ca am mai vazut-o si pe infoarena .

@Bogdan Ciobanu: I don't think that works. To be specific substractions don't work well with the count_distinct operation.

@Radu Berinde:  good job. That's the solution I had in mind.

Fain, ma gandeam si eu la ideea cu hyper log log. Explica putin mai in detaliu te rog.

Am si alta solutie, care e exacta, si e destul de eficienta.

@Boaca Cosmin
1) by timestamp
2) offline is fine, online is better

daca ai count_distinct in 2 intervale cum stii count distinct pe uniunea lor?

http://www.infoarena.ro/blog/count-distinct-2

esti bun de manager. Un manager al comunitatii lipseste .

BTW, munca la arhiva educationala ajuta la experienta 'single player'. Din grafice acolo nu e nici o problema. Problema e la 'multiplayer'.

Contribuitorii buni si-au mutat activitatea pe grupul privat de pe facebook de care incepatorii nu stiu.

http://www.infoarena.ro/blog/starea-natiunii-2016

 

http://www.infoarena.ro/blog/ganduri-ceoi

 =D>hai sa facem postul asta un blog post. Editeaza o pagina infoarena.ro/bleah, adauga textul asta, ca sa apari ca autor, si dupaia o pot muta eu ca un post pe blog.

Good job. I think we're left with 8 and 9

fixed.

Good job so far! 

An observation for other people reading the comments:
In all the problems if you repeat the same move twice it cancels out. Also If you change the order of the moves the result stays the same.
(In math terms the button push operation is commutative, associative and it's own inverse)

4. Just to make it a bit more clear: once you have a set of moves on the first column, the moves on the second column are forced and then the moves on the 3rd are forced and so on. After doing the first column and the forced moves on the rest of the columns you can check if this yields a solution for the last column.

http://www.infoarena.ro/blog/lighs-out-shortlist

http://www.infoarena.ro/blog/deep-learning-what-was-wrong-in-1986

Right now I'm going through these lectures http://cs224d.stanford.edu/syllabus.html

http://www.infoarena.ro/blog/deep-learning-alien-labs

FIIAurelian has the right solution.

http://www.infoarena.ro/blog/shoelaces

this is awsome. Elfus esti foarte vigilent. Spune-i lui Petr ca fura probleme

Asta era acum 10 ani.

http://www.infoarena.ro/blog/agm

Yes. Actually I didn't think through the 2. There is no 0 case .

http://www.infoarena.ro/blog/marble-game