Why it is only a part

Question

Only 1 × b…
where is 2 × b…
3 × b…
…
https://code.sololearn.com/cvx7xZ0x2TK1/?ref=app

Answer 1

You never reset b
https://code.sololearn.com/cT3wI7ExG7fX/?ref=app

Answer 2

Vlad Serbu
Thank you