Hello Codeforces.

Codeshark round #1 is going to take place on Codeshark this Friday morning at 9:00 o'clock (Tehran timezone). Codeshark website (previous address was marhale3.inoi.ir) and the problem statements are in Persian, that's why I didn't put a link for time and date.

You can participate in the English version the next day (time) in Codeforces gym.

This contest will have 3 problems and each problem has some subtasks. Each subtask is a short answer algorithmic problem (like Projecteuler problems) and writers are aliasadiiii and me(PrinceOfPersia). Also, the duration is 4 hour.

I'd like to thank matrix (administrator of Codeshark) for his great helps.

Good luck and have fun.