C - Cliques in Graphs
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Description
We call a set of nodes \(S\) a clique of the given graph \(G\), if and only if all nodes in \(S\) are pairwise connected with a edge.
Your task is to determine the maximum number of maximum cliques in a graph with \(n\) nodes.
Input
The only line of input contains a single integer \(n\).
Output
Print the answer. Since it can be tremendulous, print it taken modulo \(998244353\).
Examples
Sample Input
8
Sample Output
18
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