ace.delos.com continues on the next cycle of online contests named USACO. But it turned out that some people still don't know about this site. I Decided to correct this situation.

11-14 of March, ace.delos.com will open march contest. It will be opened for several days, but you can write it only for 3 hours. The countdown will start after you open up the problem. This system allows us to choose more or less convenient time for us. Results will appear in a couple of days. Then you can download the tests and the solutions of other participants.

There are three divisions : Gold, Silver, Bronze.

- Gold is written by those who have been there or those who scored more than 80% in the "Silver" the last contest.

- Silver write those who have been there or those who scored more than 80% in the "Bronze" last contest.

- Bronze write those who have been there or those who just joined the site.

Go, register, solve! The more contests you write, the better!

If you want to practice go to USACO Training. Very useful problems.

P.S. Firstly carefully read the rules!