Learning content: the DFS + pruning
Complete number of questions: 4 title
Read a book case: 11 Ye
Do questions Summary:
codeforces 587E: https://www.cnblogs.com/buhuiflydepig/p/11340218.html
AcWing 165: https://www.cnblogs.com/buhuiflydepig/p/11340707.html
Experience:
Feeling the last few days getting better and better, and always think of the idea soon after the title to read, and read the title of speed a lot faster, I hope to remain so, come on!
