Entropy always increases

Here are my thoughts/solutions for the Challenge 24 Finals problems from this year. A: Halting problem Firstly, be aware that the probl...

Here are my thoughts on the problems we solved from this year's electronic round of Challenge 24. A. Safe I didn't get a comple...

The other day I decided to experiment a bit with the support for variadic template support in C++11 (the new C++ standard). Like many C++ ...

Cave This is a nice problem following a recent IOI trend of having problems where the limiting factor is not execution time, but some ab...

I finally got around to actually solving the IOI day 1 tasks in the contest system - I'd had ideas, but no time to test them out. So he...

Here's how my team approached some of the problems in the online round of this year's Challenge 24. You can read the problems here ....

Last Supper Firstly, it's not even obvious how to simulate Leonardo's strategy efficiently. It can be done though. First, you nee...

I'm not at IOI this year, but since I didn't spot anything on the web I thought I'd post my thoughts on the Day 1 tasks. It look...

Today is another of my rare technical rants, er, blog posts. It's a topic that I struggled with a number of years ago until I understood...

Yes, after 3 years of cold, cloud, not quite so cold, travel, cloud, work, pub lunches, bad pizza, more cloud, rain, snow, more cloud, more ...

As usual, my advice on Vegas is, don't bother. This trip, I've gotten sick (something flu-like), been fed far too much, sucked in a ...

This is another one of my rare technical posts, as opposed to news of which countries I've been visiting. If you're in computer scie...

Yes, it's blog time again! Once again, it was the 24-hour Challenge in Budapest. Like last year, there were some very interesting and to...

It ran smoothly, so not much to report. Stellenbosch won, UKZN came second and UCT third. Now I get a week of holiday in Cape Town; too bad ...

I'm off to South Africa next week to help run the finals of the Standard Bank IT Challenge . This is a contest for teams of 4 university...

Following my usual trend of only blogging when I travel and have some pictures I need to post, here's some photos from my last trip to t...

I'm back in England. The contest was great fun and I'm going to miss the Bulgarian warmth and sunshine.

Don't turn up. That seems to be the view of most of the people I've talked to about the IOI planned excursion to the Black Sea. It a...

It's blog time again! As usual, it's because I'm travelling - this time to IOI again, in Bulgaria. Haven't been here long, b...

So, now that Tim is living in Oxford, I had a sufficiently good excuse to go and visit, and so I did so last weekend. The weather was rubbis...