回复：回复：欧洲奥赛题：棋盘（2.5星）

来源: 于 2009-02-04 06:22:46 [旧帖] [给我悄悄话] 本文已被阅读：次

How? It seems to me that one need
6+5+4+3+3+2+2+1+1=27,
or 6+5+4*4=27.