Cards

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You are given $N$ cards. Each card $i$ $(1\leq i\leq N)$ has a positive integer $A_i$ written on it. You have to choose $K$ cards such that the following rule is satisfied: For every pair of chosen cards $i$ and $j$ $(1\leq i,j\leq N)$, if $A_i Your task is to find the maximum value of $K$. ### Input: - The first line contains $T$, the number of testcases. Then $T$ testcases follow. - The firs

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solution.cppC++17

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