16 lines
332 B
Python
16 lines
332 B
Python
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tests = int(input())
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value = []
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for i in range(tests):
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stores = int(input())
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positions = input()
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positions = positions.split(' ')
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position_int = []
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for position in positions:
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position_int.append(int(position))
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value.append((max(position_int)-min(position_int))*2)
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for val in value:
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print(val)
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