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AntikytheraWorld Informatics Olympiads Bank

Informatics olympiad tasks from international, regional and national competitions, in English: full statements with input/output format, constraints, subtasks, time and memory limits and sample tests. Statements only — no solutions. Browse the competition-year grid.

Click a cell to open one competition's year. Click a competition or a year to see all of it.

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In their words

I think it's great for budding mathematicians that you're compiling this resource.

This is quite a collection of problems from many different olympiads. Hipparchus will definitely be useful for our students for the next year's olympiad.

Loa Hellsing
Project Leader, Swedish Astronomical Olympiad
on Hipparchus

The resource is amazing.

Pythagoras is an invaluable resource for mathematics enthusiasts, problem solvers, and olympiad participants worldwide, offering a remarkable collection of competition problems from across the globe.

🏅 Hipparchus is listed by the IOAA among its Other Resources

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Algorithmic connections