Welcome and good luck on the round!
I'd like to remind that if you have any questions on the problems, the best way to ask them is to use the web interface on the problems page.
Later in the same post we will discuss the round.
Wish you high rating,
UPD. For contest you may thanks team Saratov SU #5, namely, users
UPD2. And better late than never: the presence of English statements we are obliged only to . Many thanks to her for 8 wonderful translations of 8 rounds.