Question 1198390
.


As it is worded, printed and presented in the post, the problem is posed incorrectly.


To be correct, the problem must say in the description, 
that the number of free services that they want to provide is 15 in case (A) and 11 in case (B).


Without it, the problem can not be solved properly and is nonsense.



It is not for the first time this problem comes to the forum in this form,
and I just reacted on it in similar way earlier.