Code Jedi

We define the LEVEL of a triangle as in the following illustrative image: Task: Your task is very easy. All you have to do is to »

Some programming contest problems are really tricky: not only do they require a different output format from what you might have expected, but also the sample »

One of the famous proofs of modern mathematics is Georg Cantor's demonstration that the set of rational numbers is enumerable. The proof works by using an »

Jimmy is a hard-working pupil in his second year at primary school. Recently he decided to convert all his notes into an electronic version. Sadly, he »

A positive integer is called a palindrome if its representation in the decimal system is the same when read from left to right and from right »

How far can you make a stack of cards overhang a table? If you have one card, you can create a maximum overhang of half a »

Pattern Matchers have been designed for various sorts of patterns. Mr. HKP likes to observe patterns in numbers. After completing his extensive research on the squares »

In Byteland they have a very strange monetary system. Each Bytelandian gold coin has an integer number written on it. A coin n can be exchanged »

A class went to a school trip. And, as usually, all N kids have got their backpacks stuffed with candy. But soon quarrels started all over »

Byteman has a collection of N squares with side 1. How many different rectangles can he form using these squares? Two rectangles are considered different if »