First, the organizing committee (COMAP) of the USA is poor. 20 13 B copied the original title of the 2009 high school mathematical modeling competition, and this year B copied B in 2005 (but fortunately it was slightly changed). In addition, this year's BCD three questions look as if EF is a pure water blowing question.

Second, the level of pit money has been further improved. It used to be just the entrance fee for students. This year, it is estimated that we will go out to pit other companies and play two-way pit money. Promise to give the company a solution (Nima, isn't this a crowdsourcing platform) and get paid accordingly, even African friends. Of course, the biggest victims are poor China students, who spend 99 hours in four days and four nights and have to pay an entrance fee of 100 yuan to do problems for others for free, losing millions of dollars in foreign exchange every year. (Finally, the organizing committee can at least give a certificate, only a PDF electronic version, without the certificate number. )