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Re:用动态规划怎么做啊?

Posted by DestinyDesigner at 2008-10-06 23:43:46 on Problem 1050
In Reply To:用动态规划怎么做啊? Posted by:gaoteng1984 at 2007-08-01 19:56:41 
> 我是先求的sum[i][j] = Sum{All value in Matrix((0,0), (i,j))}, 然后再用4重循环定每个矩形的左上角和右下角,即sumMax[i][j] = Max{sum[i][j] - sum[iSmall][j] - sum[i][jSmall] + sum[iSmall][jSmall]} (for each iSmall < i && jSmall < j). 是O(N^4)的.
> 用动态规划怎么做啊,请教各位牛人...
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