Where is the problem with this code?

Question

https://code.sololearn.com/c2czllBM8c3u/?ref=app

Answer 1

You're using one string and you keep adding to it. Is that what you're trying to do? Or do you want to use arrays?
Edit: I see what you're trying to do now. Maybe try using eval() instead

Answer 2

you can use this as sample input:

++++++++[>++++++++<-]>+.

Answer 3

nope doesnt work