using System;
public class Exercise5
{
    public static void Main()
    {
        int[] arr1 = new int[100];
        int i,j, n, ctr = 0;
        Console.Write("\n\nCount total number of duplicate elements in an array:\n");
        Console.Write("---------------------------------------------------------\n");
        Console.Write("Input the number of elements to be stored in the array :");
        n = Convert.ToInt32(Console.ReadLine());
        Console.Write("Input {0} elements in the array :\n",n);
        for(i=0; i<n; i++)
            {
                Console.Write("element - {0} : ",i);
                arr1[i] = Convert.ToInt32(Console.ReadLine());
            }
        /*Finds duplicate elements in the array */
        for(i=0; i<n; i++)
            {
                for(j=i+1; j<n; j++)
                    {
                        /*Increment the counter when the seaarch value is duplicate.*/
                        if(arr1[i]==arr1[j])
                            {
                                ctr++;
                                break;
                            }
                    }
            }
        Console.Write("\nTotal number of duplicate elements found in the array is : {0}\n\n", ctr);
    }
}