Help for sum with input

Question

https://code.sololearn.com/cJmJSbn7LJ4I/?ref=app

Answer 1

What's the matter with your code?
It seems working, doesn't it?

Answer 2

https://code.sololearn.com/WhiNb9BkJUVC/?ref=app

Answer 3

When I put first input in the popup window there is no popup window for second input, or shall I put both in one window?

Answer 4

I got it now guys, I have to enter both input on popup Windows in difrrant line, thanks 🙏.