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Kick Start Round F 2020(Yeetzhee-划分数)
ProblemPommel is very bored at home so she has invented a new game involving N dice. Each die has the numbers from 1 to M written on it. Whenever she throws a die, it has an equal probability of landing on each of the M possible values.Pommel places all原创 2020-09-30 12:32:10 · 291 阅读 · 0 评论 -
BZOJ 3098(Hash Killer II-生日攻击)
3098: Hash Killer IITime Limit: 5 Sec Memory Limit: 128 MBSec Special JudgeSubmit: 66 Solved: 22[Submit][Status][Discuss]Description这天天气不错,hzhwcmhf神犇给VFleaKing出了一道题:给你一个长度为N的字符串S,求有多少原创 2013-04-04 14:32:12 · 2416 阅读 · 0 评论 -
CC MSTONES(Milestones-概率)
MilestonesProblem code: MSTONESAll submissions for this problem are available.Once upon a time, there was a Kingdom of Seven Roads. Besides a fancy name, it actually had exactly 7 st原创 2014-12-11 09:18:40 · 1279 阅读 · 0 评论 -
CF 668C(Little Artem and Random Variable-概率)
2个n面骰子,骰子上的数为1~n 同时掷骰子,得到的数为a,b 已知P(min(a,b)=i),P(max(a,b)=i)P(min(a,b)=i),P(max(a,b)=i)求P(a=i),P(b=i)P(a=i),P(b=i)求出ai=P(min(a,b)>=i),bi=P(max(a,b)<=i)a_i=P(min(a,b)>=i),b_i=P(max(a,b)<=i) P(a<=i)P原创 2016-04-30 00:15:40 · 1093 阅读 · 0 评论