1229Sum Of SubRectangular Parallelepiped http://acm.hrbeu.edu.cn/forums/index.php?showtopic=1299 求最大子长方体 AC通过-1229Sum Of SubRectangular Parallelepiped http://acm.hrbeu.edu.cn/forums/index.php?showtopic=1299 for the biggest sub-rectangular AC thro