I can’t read what’s here, what should the program do?

Question

Mathematics

In general, the guys were given the task to write a program according to this picture, but I don’t understand how to read such a construction, teach and translate what is written there please)

Answer 1

1. Apparently, some characters are missing, I can assume that the signs of the amount. Here you can try to restore the original, most likely like this:

2. There are not enough conditions for applying each of the three formulas.