试试 The 100 + k Series by Titu Andreescu and others ？另外的见内。

来源: BeLe 于 2019-03-30 12:45:22 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (2120 bytes)

USA(J)MO:

1. Problem Solving Strategies by Engel
2. The 100 + k Series by Titu Andreescu and others
3. Geometry Revisited by Coxeter
4. Participate in WOOT at AOPS
5. USAMO and IMO problems for the last 30 years
 

 

 

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