CodeForces 660E – Different Subsets For All Tuples [DP]
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传送门
Problem
For a sequence a of n integers between 1 and m, inclusive, denote f(a) as the number of distinct subsequences of a (including the empty subsequence).
You are given two positive integers n and m. Let S be the set of all sequenc...
04月25日, 2016 1,101 views次
Link
传送门
Problem
For a sequence a of n integers between 1 and m, inclusive, denote f(a) as the number of distinct subsequences of a (including ...