2019.10.20 training summary

Time flies , It's been seven weeks since school started . These days, I mainly make up for the knowledge of the professional courses that I left behind in the previous weeks , I have done a little less . Because some code can't be written , So I understand the code again .51nod The question is getting more and more difficult , Now it takes a long time to do a problem , The efficiency of doing questions is a little low , After making up the professional course knowledge, you should do as many questions as possible .