I am looking for some good regionals problem sets for educational purposes (for onsite training competitions) can anybody help me?
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There are a lot of regional problem sets for various competitions in the gym section of codeforces. Those are great for training.
but i need problems for onsite training (without internet connection) so i need I/O files
IOI tasks (and test data) are public. CEOI also makes their problems and test data public but is requires a little more work to find. Just look for the page labeled "tasks" from each year's site like the one from 2017.
thanks ^_^
Can you suggest some suitable regionals which are relatively easy for beginners.
All North American regionals, Middle East and European except for NEERC and CERC.