suppose the list is [1,-2,3,-4] how can i sum it?

Answer 1

Here is your answer..
(check 2nd topic)
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2456/

Answer 2

Which language??

Answer 3

blackwinter he mentioned the language python...

Answer 4

Python