hdu 4328 Cut the cake(最大子矩阵)2012 Multi-University Training Contest 3
CutthecakeTimeLimit:6000/3000MS(Java/Others) MemoryLimit:65536/65536K(Java/Others)TotalSubmission(s):68 AcceptedSubmission(s):26ProblemDescriptionMarkboughtahugecake,becausehisfriendray_sun’sbir