573 - The Snail

[metaphysis]

I misunderstood the problem, the statement:
"The snail has a fatigue factor of 10%, which means that on each successive day the snail climbs 10% 3 = 0.3 feet less than it did the previous day."
means every day, the snail lost 10% of climbed distances, no matter climbed distances bellow zero or above zero. I thought the factor goes back to zero when climbed distances bellow zero.
There is no need to use float point number, just use integer and multiplicate the common divider.