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Re:一个水题叙述的这么复杂....有意思么..In Reply To:一个水题叙述的这么复杂....有意思么.. Posted by:Burn_E at 2012-03-17 12:59:43 Define set B = {< x, y > | x, y ∈ R and there exists an index i > 0 such that 0 <= y <= hi ,∑0<=j<=i-1wj <= x <= ∑0<=j<=iwj} 其实是指集合B中的所有实数点对都属于任意一个矩形之中(这些矩形是相邻着排在X轴上,其中每个矩形的高是HI,宽是WI) Again, define set S = {A| A = WH for some W , H ∈ R+ and there exists x0, y0 in N such that the set T = { < x , y > | x, y ∈ R and x0 <= x <= x0 +W and y0 <= y <= y0 + H} is contained in set B}. 求一个最大的W*H,集合T是指某些实数点对,这些点对分布在某个高为H,宽为W的矩形内。 T属于B的话,就是高为H,宽为W的的的矩形包含在上面所说的并排的矩形阵列里面。 题意太难读懂了,又一道zhuangbility的 Followed by: Post your reply here: |
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