Countdown quest C++

Question

I don't know which the problem is. The two not hidden cases both are the same as my answer, but the compiler tells me they are not. Is there any problem in my code or is the compiler wrong?
Here the task:
You need to make a countdown app.
Given a number N as input, output numbers from N to 1 on separate lines.
Also, when the current countdown number is a multiple of 5, the app should output "Beep".
I'll pin there the playground:
https://code.sololearn.com/cXGqsvcfHyF6
Here one prob. N: 15
Here the answer to that N:
15
Beep
14
13
12
11
10
Beep
9
8
7
6
5
Beep
4
3
2
1

Answer 1

Use capital B in beep

Answer 2

OH, ok thanks