You cannot like it, it’s already gone.

Venice: we filter it first via some cheal filters. It is very common to own a water mug with a filter embedded here.

Paris: directly from the tap water, though I don’t like the taste.

I know this is a humor subreddit and this is a joke, but this problem wasted a huge week of mine since I was dealing with absurdly small numbers in my simulations. Use fsum from math library in Python to solve this people.