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I came up with the solution with two maps, one to track the potentail Triplets with the first one element matched and one to track the potential Triplets with the first two elements matched, but my code failed with the R==1 edge case. Could any one help me with that?
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Count Triplets
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I came up with the solution with two maps, one to track the potentail Triplets with the first one element matched and one to track the potential Triplets with the first two elements matched, but my code failed with the R==1 edge case. Could any one help me with that?