Hemamalini was enjoying her vacation at her Cousin's home. In the morning, she used to go for a jogging with her cousin. The evenings were spent on tennis court in nearly sports club. Since the activities of jogging and playing tennis were tiring, they could manage only one per day, i.e., either they went for a jog or played tennis each day. There were days when they felt lazy and stayed home all day long. For every four days they when for jog on first day, went for walk on the second day, did nothing for the third day and went for walk on the fourth day. This cycle continued. In total if they had played tennis for 30 days, how many number of days Hema stayed in her Cousin's home?