406778: GYM102538 D Disjoint LIS
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Time Limit:3 S
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Description
D. Disjoint LIStime limit per test3 secondsmemory limit per test512 mebibytesinputstandard inputoutputstandard output
Let the LIS of a permutation be the length of its longest increasing subsequence.
A permutation is good if it is possible to find two increasing subsequences of length LIS that do not share any common elements.
Given $$$n$$$, find the number of good permutations with $$$n$$$ elements. As the answer may be large, you only need to find it modulo $$$998\,244\,353$$$.
InputThe first line of input contains one integer $$$n$$$ ($$$1 \leq n \leq 75$$$): the number of elements.
OutputOutput one integer: the number of good permutations with $$$n$$$ elements, modulo $$$998\,244\,353$$$.
ExampleInput6Output
132