WebBZOJ1426 ---- collect stamps (expected dp) Header. description there are n different stamps, Phi want to collect all kinds of stamps. The only way is to collect Fanfan students to buy, you can only buy one, buy stamps and exactly what kind of stamps n is an equal probability, the probability of both 1 / n. However, due to Fanfan also like ... Webf[x]表示组成x最少需要的邮票数量一一举例最多贴5张邮票，有三种邮票可用，分别是1分，3分，8分组成0分需要0张邮票——f[0]=0组成1分需要在0分的基础上加上一张1分邮票——f[1]=f[0]+1=1（单位：张）组成2分需要在1分的基础上加上一张1分邮票——f[2]=f[1]+1=2组成3分需要min｛在2分的基础上加上一张1分 ...
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Web【Bzoj1426】Collect stamps, expect dp. tags: Question Bank-bzoj Dynamic programming Mathematics-Probability and Expectation. Title description. There are n different kinds of stamps, and Pippi wants to collect all kinds of stamps. The only way to collect is to buy one from Fanfan. You can only buy one at a time, and which of the n types of ... Web[BZOJ1426] Collecting Stamps (Expected DP) tags: DP Expectation Address. Luogu P4550 BZOJ 1426. Solution. Define state first; f [ i ] f[i] f [i] Indicates that it has been collected i i i In the case of a stamp, will n n n Expected cost of all stamps collected f [ n ] = 0 f[n]=0 f [n] = 0 Then you will find that you can't transfer - we don't know how many stamps are … Web【bzoj1426】收集邮票，代码先锋网，一个为软件开发程序员提供代码片段和技术文章聚合的网站。 ft stewart ia training