






__UpperCAmelCase     							=						{
    'joule': 1.0,
    'kilojoule': 1000,
    'megajoule': 1000000,
    'gigajoule': 1000000000,
    'wattsecond': 1.0,
    'watthour': 3600,
    'kilowatthour': 3600000,
    'newtonmeter': 1.0,
    'calorie_nutr': 4_1_8_6.8,
    'kilocalorie_nutr': 4186800.00,
    'electronvolt': 1.6_0_2_1_7_6_6_3_4E-1_9,
    'britishthermalunit_it': 1_0_5_5.0_5_5_8_5,
    'footpound': 1.3_5_5_8_1_8,
}




def 					lowercase__				(					__snake_case   :							List[Any]					,	__snake_case   :							List[str]					,	__snake_case   :							int  ):


					'''simple docstring'''


					if to_type not in ENERGY_CONVERSION or from_type not in ENERGY_CONVERSION:
										UpperCAmelCase_   :				str						=						(
										    F"Incorrect \'from_type\' or \'to_type\' value: {from_type!r}, {to_type!r}\n"
										    F"Valid values are: {', '.join(UpperCAmelCase__  )}"
										)
										raise ValueError(UpperCAmelCase__  )
					return value * ENERGY_CONVERSION[from_type] / ENERGY_CONVERSION[to_type]


if __name__ == "__main__":
		import doctest

		doctest.testmod()














def 					lowercase__				(					__snake_case   :							List[str]					,	__snake_case   :							List[str]					,	__snake_case   :							Union[str, Any]					,	__snake_case   :							Optional[int]					,	__snake_case   :							str					,	__snake_case   :							Optional[Any]  ):


					'''simple docstring'''


					if index == r:
										for j in range(__snake_case  ):
															print(data[j]					,	end=' '  )
										print(' '  )
										return
					#  When no more elements are there to put in data[]
					if i >= n:
										return
					# current is included, put next at next location
					UpperCAmelCase_   :				int						=						arr[i]
					combination_util(__snake_case					,	__snake_case					,	__snake_case					,	index + 1					,	__snake_case					,	i + 1  )
					# current is excluded, replace it with
					# next (Note that i+1 is passed, but
					# index is not changed)
					combination_util(__snake_case					,	__snake_case					,	__snake_case					,	__snake_case					,	__snake_case					,	i + 1  )
					# The main function that prints all combinations
					# of size r in arr[] of size n. This function
					# mainly uses combinationUtil()




def 					lowercase__				(					__snake_case   :							List[Any]					,	__snake_case   :							List[Any]					,	__snake_case   :							str  ):


					'''simple docstring'''


					UpperCAmelCase_   :				Union[str, Any]						=						[0] * r
					# Print all combination using temporary array 'data[]'
					combination_util(__snake_case					,	__snake_case					,	__snake_case					,	0					,	__snake_case					,	0  )


if __name__ == "__main__":
		# Driver code to check the function above
		__UpperCAmelCase     							=						[10, 20, 30, 40, 50]
		print_combination(arr, len(arr), 3)
		# This code is contributed by Ambuj sahu






