This problem requires a ful prove:
There are three cities, randomly displayed wherever you want. Find a point from which the sum of the distances is the smallest possible.
If someone gets it, I will donate 4 FRI$
Here is a picture:

There are three cities, randomly displayed wherever you want. Find a point from which the sum of the distances is the smallest possible.
If someone gets it, I will donate 4 FRI$
Here is a picture:
