1338

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

所有跟帖: 

wrong -屋漏痕- 給 屋漏痕 發送悄悄話 屋漏痕 的博客首頁 (0 bytes) () 07/15/2009 postreply 11:34:44

請您先登陸,再發跟帖!