How to change numers on letters?

Question

https://code.sololearn.com/cdQT4UTq9AAe/?ref=app

Answer 1

I think as you can see it now.

Answer 2

Thank you very much, again.

Answer 3

Thank you for answer, but I still can't do that. I'm just too stupid for it.

Answer 4

Well, if you write one name, program says "Cool" and if you write every other name, it's says "Idiot". Maybe weird, maybe stupid, but I should do that to learn something.

Answer 5

It's in the first question, on the top

Answer 6

https://code.sololearn.com/cdQT4UTq9AAe/?ref=app

Answer 7

Thank you