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Educational Codeforces Round 73 (Rated for Div. 2) D. Make The Fence Great Again(DP)
时间 2020-07-21
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题意: 给出一排木板的高度和将这些木板提高1个高度的代价。问使这些木板达到没有相邻的两块木板相等的状况的最小代价。html 思路: 二维DP 本题关键:对于每一块木板,最多提升两次。ios 若是一个木板提升了三次才和两边的木板高度不等,那么提升两次必定和某个木块相等,同理也有一个木块等于提升一个的长度。那么这个木块就干脆不提升就行,这与提升三次矛盾。web 因此能够得出最多提升两次的结论。app
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