HOSTEL ROBBER

There is a hostel robber in PSG Tech hostels. He has a strategy to rob the rooms without getting noticed. The strategy is simple. He only robs atmost two contiguous rooms. The ith room in the hostel will have a[i] items. Once he robs a room he takes all the items in that room. He wants to rob exactly $P$ items. If he robs more than $P$ items or less than $P$ items he will get caught. Each room h