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project_euler/problem_006/sol1.py
44 строки
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Christian Clauss
The black formatter is no longer beta (#5960)
30 янв 2022, 22:29
Не верифицирован
30 янв 2022, 22:29
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""" Project Euler Problem 6: https://projecteuler.net/problem=6 Sum square difference The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ten natural numbers is, (1 + 2 + ... + 10)^2 = 55^2 = 3025 Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is 3025 - 385 = 2640. Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum. """ def solution(n: int = 100) -> int: """ Returns the difference between the sum of the squares of the first n natural numbers and the square of the sum. >>> solution(10) 2640 >>> solution(15) 13160 >>> solution(20) 41230 >>> solution(50) 1582700 """ sum_of_squares = 0 sum_of_ints = 0 for i in range(1, n + 1): sum_of_squares += i**2 sum_of_ints += i return sum_of_ints**2 - sum_of_squares if __name__ == "__main__": print(f"{solution() = }")