Learning content: 01 + binary heap trie
Complete number of questions: 4 title
Reading case: 7 Ye
Do questions Summary:
AcWing 144: https://www.cnblogs.com/buhuiflydepig/p/11307937.html
AcWing 145: https://www.cnblogs.com/buhuiflydepig/p/11309723.html
codeforces 849A: https://www.cnblogs.com/buhuiflydepig/p/11312153.html
codeforces 849B: https://www.cnblogs.com/buhuiflydepig/p/11312083.html
Experience:
Today stupid enough to put myself in tears, read or not read the title, a title reading for half an hour, or a flood title, good food ... I understand the question is flawed, this need remedial remedial ...