Sorry for my bad English >__<
I will host a small contest called "Weekly Training Farm #15" tomorrow.
The exact time is 2nd December 12:00 UTC. It's just about 4 hours before Codeforces Round #383.
Weekly Training Farm Contest Series are hosted in Codeforces group tw-icpc-blog
All problem are prepared by me. This time all problems are my original problems.
You can see the last contest Weekly Training Farm #14 to understand the style of problems.