The size of a large cuboid is n*11*10, which is composed of some 1*1*1 unit cubes and a 2*1*1 cuboid. The 2*1*1 cuboid has 2671 positions in the big cuboid, so n=how much.
一个大长方体的尺寸为n*11*10，它是由一些1*1*1的单位立方体和一个2*1*1的长方体构成．2*1*1的长方体在大长方体中有2671个位置可以放置，那么n=多少．
<result>9</result>