If you are a programmer, you might be interested in IPSC 2016, an online competition of individuals and teams of at most three members. Participation is free, you can register online anytime you want (even during the competition). You can use any programming language you want; the programs themselves are not rated, only whether you transform the inputs to outputs correctly. Anyone can participate, but there will be separate ranking for teams of high-school students.
It is on Saturday, June 18th, 11:00-16:00 UTC.
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