Question

200,—200, 300, —300, 500, —500, 50, —100 ​

Answer 1

А что надо сделать та?

Answer 2

It appears you've provided a sequence of numbers with alternating positive and negative values. Here's the sequence you've given:

1. 200
2. -200
3. 300
4. -300
5. 500
6. -500
7. 50
8. -100

If you have a specific question or if you would like me to perform a particular operation on this sequence, please let me know, and I'll be happy to assist you further.