help me on "Extra-Terrestrials" (easy mode). im on python

Question

i use Python.

Answer 1

Where is your attempt?
Sorry, we are not here to solve the problem for you immediately in our ways. We need your attempt here,no matter it is incomplete or not.
We'll only giving you code solutions by modifying your attempt and test it out, or giving only hints to complete the code.

Hints: Negative indexing(Slicing), OR using while loop for getting all characters starting from last index.
https://code.sololearn.com/W0uW3Wks8UBk/?ref=app
https://code.sololearn.com/Wek0V1MyIR2r/?ref=app

Answer 2

Lần đầu tiên thấy người VN post câu hỏi trong CĐ SoloLearn mừng rớt nước mắt:(

Answer 3

I think you should paste along your code into the question so than we can help ya