因为加4就是40
而要求不是最后一步是加1吗

• by one smaller than the length of the previous step (29) frkstyc 2005-08-17 20:51:13
  • Re: by one smaller than the length of the previous step (7) tcxgsy 2005-08-17 20:58:36
    • Re: by one smaller than the length of the previous step (73) xianyunsc 2005-08-17 21:42:02
      • Re: by one smaller than the length of the previous step (11) tcxgsy 2005-08-17 21:55:41
        • 第一步和最后一步必须是1,中间的每一步只能:比上一步大1,相等,或者小1 (15) xfxyjwf 2005-08-17 21:58:34
      • Re: by one smaller than the length of the previous step (11) tcxgsy 2005-08-17 21:55:43
        • Re: by one smaller than the length of the previous step (36) xianyunsc 2005-08-18 20:14:47