Today, I am mainly addicted to combinatorial mathematics. Some of the topics on permutation groups and inclusion and exclusion I have not understood before seem to be understandable, but there are also topics that I have read that feel a little strange, especially inclusion and exclusion. As planned, I will be addicted to dp tomorrow, and Xidian suffered a loss of dp in that game before. In addition, it seems that I have gained a lot from reading my blog when I have nothing to do. Regarding the application of Fermat's little theorem, what about (a^n)%p=a^((n)%(p-1))%p It came out and figured it out.
In addition, I feel that the speed of reading blogs is really slow, especially for combinatorial topics, or clear ideas, it always takes a lot of time, and I have to work harder. The topic must be paid more attention to, and the template should be kept.