Maching Sets

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Bob gave Anna a sequence of Q integers: K1, K2, K3,…Kn. She is asked to find the Number of sets (i,j) such a way Ki | Kj ≤ max(Ki, Kj) and 1≤ i Input The first line of the input contains an integer T, denoting the number of test cases. The description of each testcase follows. The first line of each testcase contains a single integer: Q The second line of each testcase contains Q integers: K1,K2

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

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solution.cppC++17

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