Hello Codeforces community,

We are looking for 3 hard problems (the difficulty level should be around a Codeforces D/E Div. 1). We don't require the problems to have the same author, so if you only have one suitable problem that's fine with us, we'll use the first come — first served principle. The compensation budget for this project is $350/problem (or the equivalent amount in rubles at a Russian bank exchange rate).

Please send an email with the statement and solution explanation at andrei@blink.net. Feel free to contact Andrei for any other additional info.

Cheers,

The CS Academy team