摘要： Come on, don't waste any precious time! I announce here I will go on my learning discrete mathematics tomorrow andfrom now onI won't waste any more time in sitting next to my notebook not knowi... 阅读全文

摘要： I think I must have been degenerated. I have not doing the things about discrete mathematics for nearly 2 days. Then what I was doing this two days? It seems not too back that I was still doing s... 阅读全文