回複:回複:歐洲奧賽題:棋盤(2.5星)

回答: 歐洲奧賽題:棋盤(2.5星)康MM2009-01-24 14:08:18

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

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