Viktor Starodubtsev maestroviktorin

maestroviktorin / task-4297.py

Created January 26, 2023 09:11

Solution to the problem #4297 by E. Jobs from the website of K. Polyakov.

	"""
	Problem #4297 from the website of K. Polyakov.

	`3-4.csv` is the `Family ties` sheet, already prepared in Excel.

	Each row looks like this:
	`Parent ID`,`Child ID`,`City of the parent`,`City of the child`

	The `City` values are pulled from the `People` sheet via `VLOOKUP`.

maestroviktorin / task-5404.py

Created January 11, 2023 20:38

Solution to the problem #5404 by E. Jobs from the website of K. Polyakov.

	# This code is applicable only to the task No. 5404 by E. Jobs from the website of K. Polyakov
	# and cannot be applied to other similar tasks.

	from math import prod


	def f(start: int):
	if start < 8:
	return 0

maestroviktorin / task-5834.py

Created January 9, 2023 19:16

Solution to the problem #5834 by E. Usov from the website of K. Polyakov.

	# Helpful hashmaps.
	HEX_DEC = dict(zip('0123456789abcdef', tuple(range(16)))) # Pairs of digits - `hexadecimal`: `decimal`
	DEC_HEX = dict(zip(tuple(range(16)), '0123456789abcdef')) # Pairs of digits - `decimal`: `hexadecimal`


	# Implementation of the algorithm described in the problem.
	def detective(n: int) -> str:
	hex_n = hex(n)[2:]

	hex_n += '0' if n % 2 else 'f'

maestroviktorin / task-5714.py

Created January 8, 2023 19:49

Solution to the problem #5714 by V. Petrov from the website of K. Polyakov.