computing competitions

Canadian computing competition: The questions in the CCC are algorithmic in nature, designed to test a student's ability to design and code algorithms rather than their ability knowing APIs (such as Swing or AWT). Problems increase greatly in difficulty, where the last question is an IOI level problem. They generally have memory, time or stack constraints (especially in recursion) forcing the programmer to find a more efficient solution to the problem. Usually, most problems contain a hidden loophole that would allows certain inputs to crash the program or produce incorrect results.