HN Explorer

8 comments

[ 2.6 ms ] story [ 33.6 ms ] thread
eordano
I used to train hard for the topcoder competition. It's a nice community; and those tutorials are very useful.

The ones that I found more interesting were the ones on line sweep and geometric algorithms.

On Fenwick's Trees; this tutorial http://www.topcoder.com/tc?module=Static&d1=tutorials... is really good. Although, the original paper is well-explained: (link to the author's website) http://www.cs.auckland.ac.nz/~peter-f/ ("A new data structure for cumulative frequency tables")

And on bit manipulation; I highly recommend you read this... you'll be thinking in zeroes and ones for a while... http://www.topcoder.com/tc?module=Static&d1=tutorials...

atamyrat
IOI participant? Hello and welcome to HN!
eordano
Thank you :D

I've read HN for two years now... made an account just a few days ago... I don't write a very good english (I understand it really well though) so I've never felt like commenting...

I've been a IOI participant twice -> and twice a looser.

[dead] hello00768
welcome to: http://www.wowowbiz.com/ The website wholesale for many kinds of fashion shoes, like the nike,jorda-n,prada,ad-idas, also including the jeans,shir-ts,bags,ha-t and the decorations. All the products are free shipping, and the the price is competitive, and also can accept the paypal payment.,after the payment, can ship within short time. http://www.wowowbiz.com/
protez
please delete this shit.
icey
In case people are unaware, you can flag a comment by hitting the reply link - there is a flag option on the reply screen.
silvajoao
I can't help but feel curious about the "shit" that was deleted.

It's not cool to just have a [dead] remark; could there be a better solution to remove the noise, yet allow curious people to find out what are the replies referring to?

RiderOfGiraffes
Go to your profile and turn on "Show Dead". I used to leave it on because, like you, I was curious. But over time I've come to trust the deletions, and now believe that, on the whole, the deleted material simply wastes my time.