Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for Lightbulb Start Watching by pakhomovegor
from datetime import datetime
from typing import List, Optional
def sum_light(els: List[datetime], start_watching: Optional[datetime] = None) -> int:
"""
how long the light bulb has been turned on
"""
def maxtime(a):
if start_watching==None:
return a
if a
July 4, 2021
