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这题怎么做??????我是先贪心一遍,,,得到最少需要的lecture,,,, 然后n^3的dp,,可是速度太慢了啊,,,500++ms,,,那些几十ms的怎么做的???? 我又优化了一下,,在得到lecture之后,,从右向左扫描一遍,,得到前i个点最右放到第几个lecture,,可是还是400多ms,,,怎么优化啊?? Followed by: Post your reply here: |
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