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1119: 化学品问题 I

531037 | 2017-12-21 23:34:29 | delete | edit
高中排列组合题的插空法 
qw4990 | 2012-12-18 15:17:16 | delete | edit
dp[i][j] 表示到第i个药品为止有连续j个试管放置了药品的种数 

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