using System;
public class Program
{
public static void Main()
int[] mas = {2,3,6,5,-7,-2,-4};
for (int i = 0; i < mas.Length; i++)
if (mas[i] %2==0)
mas[i] /= 2;
else if(mas[i] %2!=0)
mas[i] *= 2;
Console.WriteLine(mas[i]);
}