import java.util.Scanner;
public class Assignment33

{
   public static void main (String[] args)
   {
      Scanner input = new Scanner (System.in);
      int productCounter1 = 0;
      System.out.print("Enter product numbers in the range 1-5, then enter the value -1 to terminate: ");
      int products = input.nextInt();
      while ( input.nextInt() != -1)
      {
        switch (products)
        {
           case 1:
           ++productCounter1;
           break;
        }
      }
   System.out.print("Product 1: " + productCounter1);
   }
}