The absolute solution to this problem

is to find the absolutely shortest and fastest way to loop around this date route...

Examine them all.

Date course 1

Date course 2

When considering the 22 locations that we have to reach, and the number of orders we can take to see them all,

It's absolutely impossible to be able to experiment them all.

About 1.1 sextillion (1.124 x e^21) routes

(The Earth weighs about 6 sextillion tons)

Which is why this is one of those problems that doesn't have an absolute answer.

Do you know a way to solve this, Kanade-chan?

Let's see... for example.

If you head for the closest attraction to the entrance first.

Then from there go to the nearest attraction... and repeat that over and over.

As a result, you'll have one date route plan.

This is closest

The next is here.

And it becomes like this.