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似乎可以做成广搜

Posted by sunmoonstar_love at 2005-07-25 01:30:38 on Problem 1923
In Reply To:感觉像一种递推, 纵向是差为递增数列的数列,第一项是n*(n-1)/2, 横向是差为1 的等差数列,递推结束条件是找到m跳出,或是未找到,约束条件是构成几组平行线的直线数小于n Posted by:sunmoonstar_love at 2005-07-25 01:29:10
> 感觉像一种递推, 纵向是差为递增数列的数列,第一项是n*(n-1)/2, 横向是差为1 的等差数列,每横向推一步平行线组数加1;递推结束条件是找到m跳出,或是未找到,约束条件是构成几组平行线的直线数小于n;
> 
>       这个想法对么?

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