Infosys Software Developer interview questions

Regarding our academic projects and internship

1) There are N employees sitting in consecutive cubicles, we have to send a few of them onsite, but each time we send one employee onsite, his cubicle becomes empty. Now, the other employees from both sides of that empty cubicle stop working until they are given a gift. The gifts are given on both sides of the empty cubicle until we reach the end or found another cubicle. Input Format: Number of cubicles Index numbers of people to be sent Output Format: Minimum number of gifts needed