E - Valid Teams

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Pandemic is over in india and Everything gets back to normal again at iitgn. Inter IIT sports meet is going to start soon. DP sir is very excited about it. He wants to calculate number of valid teams of size $m$ that he can send for Inter IIT. There are $n$ students who wants to go to Inter IIT. For each $1<=i<=n$, $i$th student has some value $a_i$ associated with him/her which is calculated b

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solution.cppC++17

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