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Commit da6e627

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Create 2870.py
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‎2501-3000/2870.py‎

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class Solution:
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def minOperations(self, nums: List[int]) -> int:
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d = defaultdict(int)
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for num in nums:
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d[num] += 1
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if min(d.values()) == 1:
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return -1
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return sum(c // 3 + (c % 3 > 0) for c in d.values())
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