1338

来源: 屋漏痕 于 2009-07-15 10:00:27 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (148 bytes)

two reds can satisfy two blues;
three reds can satisfy four blues;
four reds can satisfy six blues;
...
670 reds can satisfy 1338 blues.

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• wrong -屋漏痕- ♂ 给 屋漏痕 发送悄悄话 屋漏痕 的博客首页 (0 bytes) () 07/15/2009 postreply 11:34:44

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