@[hktk1643](/space/show?uid=32366) by steven张 @ 2018-01-07 12:44:01
并不需要完全三分 可以mid1 = (l + r) / 2 - 1 mid2 = mid1 + 2 快1.5倍 by star_city @ 2018-03-03 12:44:33