is an annual programming competition for high school students. It is the second-largest Olympiad, after the International Sports Olympiad, in terms of the number of participating countries. was the first edition in 1989 in Bravitz, Bulgaria.

The competition consists of two days of computer programming and problem-solving of an algorithmic nature. For dealing with problems involving large amounts of data, the difficult part of this competition is not the programming, but the mathematics that makes up the work. Each country is represented by 4 students who compete on an individual basis.

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It takes place during July every year and is attended by the best 4 students in the team.