Lets Play A Game

Guddu and Bablu were getting bored, so they decided to play a game. Bablu gives him a situation and asks Guddu to answer it. But he is not as wise as his brother so he hired you, the best programmer of Mirzapur at gunpoint, and now you have to answer it. You are given an array $A$, consisting of $N$ integers. Turn by turn, each player will pick a number from $A$, and remove one or more occurrence