




import math

def 			a   (_lowerCAmelCase = 1_0_0     ):
							SCREAMING_SNAKE_CASE_   	=    sum(i * i for i in range(1  ,    n + 1     )     )
							SCREAMING_SNAKE_CASE_   	=    int(math.pow(sum(range(1  ,    n + 1     )     )  ,    2     )     )
							return square_of_sum - sum_of_squares


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








def 			a   (_lowerCAmelCase     ):
							SCREAMING_SNAKE_CASE_	,	SCREAMING_SNAKE_CASE_   	=    [], []
							while len(_lowerCAmelCase     ) > 1:
														SCREAMING_SNAKE_CASE_	,	SCREAMING_SNAKE_CASE_   	=    min(_lowerCAmelCase     ), max(_lowerCAmelCase     )
														start.append(_lowerCAmelCase     )
														end.append(_lowerCAmelCase     )
														collection.remove(_lowerCAmelCase     )
														collection.remove(_lowerCAmelCase     )
							end.reverse()
							return start + collection + end


if __name__ == "__main__":
			__SCREAMING_SNAKE_CASE 						=input("""Enter numbers separated by a comma:\n""").strip()
			__SCREAMING_SNAKE_CASE 						=[int(item) for item in user_input.split(""",""")]
			print(*merge_sort(unsorted), sep=""",""")


