[SOLVED] Why do lines 14 or 15 of the following code not work on code playground?

Question

https://code.sololearn.com/cCv63YN8ZIo8/?ref=app

Answer 1

Both lines worked for me after including <vector>. Are you sure the problem is not the missing inclusion of the <vector> header?

Answer 2

Shadow yes you are right! It was simply a case of the missing header. Thanks!

Answer 3

No problem, happens. XD