输出1或2就能拿40(滑稽)
by zhbayl000 @ 2017-07-25 09:53:42
@[FHXZ](/space/show?uid=12004) @[zhbayl000](/space/show?uid=37937)
事实上,一看n<=50,就大概能计算出这个肯定会有一条$<=49$的可到路径 $49<$ $2^{6}$,所以答案最大是$5$
by Ousmane_Dembele @ 2018-12-09 16:57:37