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The Ukrainian Olympiad in Informatics (UOI) is an annual informatics competition for secondary school students who live in Ukraine. The first UOI was held in 1988. The contest consists of two days computer programming, solving problems of an algorithmic nature. Students compete on an individual basis, with up to ten or even more students competing from each participating region (there were 28 teams including 25 teams of Ukrainian regions, teams of Kiev, Sevastopol and team of UPML (Ukrainian Physico-Mathematical Lyceum) in 2005). Students are selected through their regions' computing contests. == Structure of the competition == On each of the two competition days, the students are typically given three problems which they have to solve in five hours. Each student works on his/her own, with only a computer and no other help allowed, specifically no communication with other contestants, books etc. Usually to solve a task the contestant has to write a computer program (in C, C++ or Pascal) and submit it before the five hour competition time ends. Later on, the program is graded by being run with secret test data, consisting of multiple (typically 10 or 20) test cases. The contestant is awarded points for each test case that his program solves correctly, and within the given time and memory limit. In some cases, the contestant's program has to interact with a secret computer library, which allows problems where the input is not fixed, but depends on the program's actions - for example in game problems. Another new type of problems has known inputs which are publicly available already during the five hours of the contest. For these, the contestants have to submit the according output file instead of a program, and it is up to them whether they obain the output files by writing a program (possibly exploiting special characteristics of the input), or by hand, or by a combination of these means. The scores from the two competition days and all problems are summed up separately for each contestant. At the awarding ceremony, contestants are awarded places depending on their relative total score. The top 50% of the contestants are awarded some prize places, such that the relative number of 1st place : 2nd place : 3rd place : no prize place is approximately 1:2:3:6 (thus 1/12 contestants get a first place). (Compare with IOI competition.) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ukrainian Olympiad in Informatics」の詳細全文を読む スポンサード リンク
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