Foreword: As a newbie, it was the first time I followed my friends to play in other schools (the masters are too strong, and the question maker is too powerful), the abused body and skin, and the teammates to sign in successfully. (membrane mate).
text
The first feeling is that the idea of the person who gave the question is relatively new (for me), and he pays more attention to the principle (since he is also doing iscc now, the sense of contrast is relatively large).
The second is patience. It’s not all very, very difficult when I think about it now. If I could calm down and do it yesterday, I might still have a chance. When it comes to small problems, I don’t want to think about it. I always feel cold. It’s a pity to think about it now.
now.... wait for the masters to give the source code to learn