Given a sequence A1.A2....An, give you an integer K, find the number of pairs (i, j) that satisfy all Ai+Aj>=k - Code World

Given a sequence A1.A2....An, give you an integer K, find the number of pairs (i, j) that satisfy all Ai+Aj>=k

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Given a sequence A1.A2....An, give you an integer K, find the number of pairs (i, j) that satisfy all Ai+Aj>=k

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