最小值是 8
所有跟帖:
• 錯了 -小信人- ♂ (0 bytes) () 12/11/2014 postreply 13:26:01
• ab+bc+cd+da=((a+b+c+d)^2)/2-10)-ac-bd. -jinjing- ♀ (43 bytes) () 12/14/2014 postreply 18:53:01
• 錯了 -小信人- ♂ (0 bytes) () 12/11/2014 postreply 13:26:01
• ab+bc+cd+da=((a+b+c+d)^2)/2-10)-ac-bd. -jinjing- ♀ (43 bytes) () 12/14/2014 postreply 18:53:01
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