Steal to make Even

There is a game called $steal$ $to$ $make$ $even$, in which you had given $n$ number of boxes and each box contains some balls. your task is to find out the number of ways to steal exactly one box so that the total number of balls in the remaining boxes will be even. Note: Zero will also be treated as even number. ### Input The first line contains the only integer n the number of boxes The seco