It was vacation time,  So I decided to visit my cousin’s home. What a grand time we had!
In the mornings, we both would go for a jog. The evenings were spent on the tennis court.
Tiring as these activities were, we could manage only one per day, i.e., either we went for a jog or played tennis each day.
There were days when we felt lazy and stayed home all day long.

Now, there were 13 mornings when we did nothing, 16 evenings when we stayed at home, and a total of 11 days when we jogged or played tennis.

For how many days did I stay at my cousin’s place?