



from collections import namedtuple

__snake_case						:Tuple      		=     namedtuple('''from_to''', '''from_ to''')

__snake_case						:Dict      		=     {
    '''cubicmeter''': from_to(1, 1),
    '''litre''': from_to(0.0_0_1, 1000),
    '''kilolitre''': from_to(1, 1),
    '''gallon''': from_to(0.0_0_4_5_4, 2_6_4.1_7_2),
    '''cubicyard''': from_to(0.7_6_4_5_5, 1.3_0_7_9_5),
    '''cubicfoot''': from_to(0.0_2_8, 3_5.3_1_4_7),
    '''cup''': from_to(0.0_0_0_2_3_6_5_8_8, 4_2_2_6.7_5),
}





def      __snake_case	(			_UpperCAmelCase   , _UpperCAmelCase   , _UpperCAmelCase				):
    if from_type not in METRIC_CONVERSION:
        raise ValueError(
            f'Invalid \'from_type\' value: {from_type!r}  Supported values are:\n'
            + ''', '''.join(_UpperCAmelCase				)				)
    if to_type not in METRIC_CONVERSION:
        raise ValueError(
            f'Invalid \'to_type\' value: {to_type!r}.  Supported values are:\n'
            + ''', '''.join(_UpperCAmelCase				)				)
    return value * METRIC_CONVERSION[from_type].from_ * METRIC_CONVERSION[to_type].to


if __name__ == "__main__":
 import doctest

 doctest.testmod()









'''simple docstring'''


def 			snake_case_   (  SCREAMING_SNAKE_CASE__     ):







				"""simple docstring"""





				_SCREAMING_SNAKE_CASE :       int     		=      0
				while len(SCREAMING_SNAKE_CASE__     ) > 1:
								_SCREAMING_SNAKE_CASE :       Any     		=      0
								# Consider two files with minimum cost to be merged
								for _ in range(2     ):
												_SCREAMING_SNAKE_CASE :       Optional[int]     		=      files.index(min(SCREAMING_SNAKE_CASE__     )     )
												temp += files[min_index]
												files.pop(SCREAMING_SNAKE_CASE__     )
								files.append(SCREAMING_SNAKE_CASE__     )
								optimal_merge_cost += temp
				return optimal_merge_cost


if __name__ == "__main__":
				import doctest

				doctest.testmod()




