Python/project_euler/problem_016/sol2.py
Christian Clauss 24d3cf8244
The black formatter is no longer beta ()
* The black formatter is no longer beta

* pre-commit autoupdate

* pre-commit autoupdate

* Remove project_euler/problem_145 which is killing our CI tests

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
2022-01-30 20:29:54 +01:00

31 lines
567 B
Python

"""
Problem 16: https://projecteuler.net/problem=16
2^15 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 2^1000?
"""
def solution(power: int = 1000) -> int:
"""Returns the sum of the digits of the number 2^power.
>>> solution(1000)
1366
>>> solution(50)
76
>>> solution(20)
31
>>> solution(15)
26
"""
n = 2**power
r = 0
while n:
r, n = r + n % 10, n // 10
return r
if __name__ == "__main__":
print(solution(int(str(input()).strip())))