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Basic Math Utils
from math import gcd
from functools import reduce
# or
# def gcd(a, b):
# """Return greatest common divisor using Euclid's Algorithm."""
# while b:
# a, b = b, a % b
# return a
def lcm(a, b):
"""Return lowest common multiple."""
return a * b // gcd(a, b)
def lcmm(numbers):
"""Return lcm of numbers."""
return reduce(lcm, numbers)
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