Ron loves Candies

Problem description. Ron had a set of N bowls arranged in order, each containing some amount of special candies. He wants to move most of them to the first bowl. The candies can only be picked up in pairs and seeing as to how much he loves them, Ron eats one of the two every time he picks up a pair of candies. Also, since the bowls are enchanted, he can place a picked candy into its left adjacen