



"""simple docstring"""







def       _lowerCamelCase				(							UpperCAmelCase_ :       list[int],	UpperCAmelCase_ :       list[int],	UpperCAmelCase_ :       int     )	-> bool:






	"""simple docstring"""





	return not any(
	    neighbour == 1 and colored_vertices[i] == color
	    for i, neighbour in enumerate(UpperCAmelCase_     )     )

def       _lowerCamelCase				(							UpperCAmelCase_ :       list[list[int]],	UpperCAmelCase_ :       int,	UpperCAmelCase_ :       list[int],	UpperCAmelCase_ :       int     )	-> bool:






	"""simple docstring"""





	if index == len(UpperCAmelCase_     ):
		return True

	# Recursive Step
	for i in range(UpperCAmelCase_     ):
		if valid_coloring(graph[index],	UpperCAmelCase_,	UpperCAmelCase_     ):
			# Color current vertex
			A__											=					i
			# Validate coloring
			if util_color(UpperCAmelCase_,	UpperCAmelCase_,	UpperCAmelCase_,	index + 1     ):
				return True
			# Backtrack
			A__											=					-1
	return False




def       _lowerCamelCase				(							UpperCAmelCase_ :       list[list[int]],	UpperCAmelCase_ :       int     )	-> list[int]:






	"""simple docstring"""





	A__											=					[-1] * len(UpperCAmelCase_     )

	if util_color(UpperCAmelCase_,	UpperCAmelCase_,	UpperCAmelCase_,	0     ):
		return colored_vertices

	return []









"""simple docstring"""







from __future__ import annotations

def       _lowerCamelCase				(							UpperCAmelCase_ :       float,	UpperCAmelCase_ :       float,	UpperCAmelCase_ :       float,	)	-> tuple:






	"""simple docstring"""





	if (electron_conc, hole_conc, intrinsic_conc).count(0     ) != 1:
		raise ValueError("You cannot supply more or less than 2 values"     )
	elif electron_conc < 0:
		raise ValueError("Electron concentration cannot be negative in a semiconductor"     )
	elif hole_conc < 0:
		raise ValueError("Hole concentration cannot be negative in a semiconductor"     )
	elif intrinsic_conc < 0:
		raise ValueError(
		    "Intrinsic concentration cannot be negative in a semiconductor"     )
	elif electron_conc == 0:
		return (
		    "electron_conc",
		    intrinsic_conc**2 / hole_conc,
		)
	elif hole_conc == 0:
		return (
		    "hole_conc",
		    intrinsic_conc**2 / electron_conc,
		)
	elif intrinsic_conc == 0:
		return (
		    "intrinsic_conc",
		    (electron_conc * hole_conc) ** 0.5,
		)
	else:
		return (-1, -1)


if __name__ == "__main__":
			import doctest

			doctest.testmod()




