from __future__ import annotations




def     UpperCamelCase						(	__lowercase						:			list[int]     ):
		'''simple docstring'''




		return len(set(__lowercase     )     ) == len(__lowercase     )


if __name__ == "__main__":
	import doctest

	doctest.testmod()







import math




def     UpperCamelCase						(	__lowercase						:			int = 1_00     ):
		'''simple docstring'''




		A_		:    List[Any]         =				sum(i * i for i in range(1						,n + 1     )     )
		A_		:    int         =				int(math.pow(sum(range(1						,n + 1     )     )						,2     )     )
		return square_of_sum - sum_of_squares


if __name__ == "__main__":
	print(F"""{solution() = }""")






