Hi CodeForces!

BWC(Black.White Crow) Round #8 is going to take place on BWC At 21:35 today.(Tehran Timezone).Problem statements are in Perisan.

This Contest will have 3 problems each of them has some subtasks. Each subtask is a short answer algorithmic problem(Like Project Euler). Writer of the Round is ATofighi. I'd like to thank ITDOI, EKGMA and MMJ for testing the Contest.

Good luck and Have fun.