Max Sum of Rectangle No Larger Than K 子矩形和小于K的最大值 + 动态规划DP + 暴力循环真好
Givenanon-empty2Dmatrixmatrixandanintegerk,findthemaxsumofarectangleinthematrixsuchthatitssumisnolargerthank.Example:Givenmatrix=[[1,0,1],[0,-2,3]]k=2Theansweris2.Becausethesumofrectangle[[0,1],[-2,3]