Unique Color Shirt

#include 
using namespace std;

int main()
{
  int n; cin>>n;
  int arr[n];

  /* hash array for storing frequency of same coloured shirts */
  int hash[1001] = {0};

  //count of unique shirts
  int count = 0;

  /* input the shirt and increment its frequency */
  for(int i=0; i>arr[i];
    hash[arr[i]]++;
  }

  //count all unique shirts
  for(int i=0; i

						 

import java.util.*;
import java.io.*;

public class Main {
  public static void main(String args[]) throws IOException {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int arr[] = new int[n];

    /* hash array for storing frequency of same coloured shirts */
    int hash[] = new int[1001];

    //count of unique shirts
    int count = 0;

    /* input the shirt and increment its frequency */
    for(int i=0; i
						 

n=int(input())

# hash array for storing frequency of same coloured shirts
hash_=[0 for i in range(1001)]

# count of unique shirts
count=0

# input the shirt and increment its frequency
arr=list(map(int,input().split()))

for i in range(n):
	hash_[arr[i]]+=1

# count all unique shirts
for i in range(n):
	if hash_[arr[i]]==1:
		count+=1
print(count)