Chef and Interesting Subsequences

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Chef has a sequence $A_1, A_2, \ldots, A_N$. This sequence has exactly $2^N$ subsequences. Chef considers a subsequence of $A$ *interesting* if its size is exactly $K$ and the sum of all its elements is minimum possible, i.e. there is no subsequence with size $K$ which has a smaller sum. Help Chef find the number of interesting subsequences of the sequence $A$. ### Input - The first line of the

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solution.cppC++17

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