	import java.util.*;
	
	
	
	public class Main {
	
		public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		}
		
		
	} import java.util.*; util.* java public class Main {
	
		public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		}
		
		
	} Main public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		} main {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc Integer a[] = new Integer[N]; a new Integer[N] N for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			} int i = 0; int i = 0; i 0 i<N i N i++ i++ i {
				a[i] = sc.nextInt();
			} {
				a[i] = sc.nextInt();
			} a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc Arrays.sort(a,Collections.reverseOrder()) Arrays.sort Arrays a Collections.reverseOrder() Collections.reverseOrder Collections int res = 1; res 1 for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			} int j = 1; int j = 1; j 1 j<N j N j++ j++ j {
				if (a[j] < a[j-1]) {
					res++;
				}
			} {
				if (a[j] < a[j-1]) {
					res++;
				}
			} if (a[j] < a[j-1]) {
					res++;
				} a[j] < a[j-1] a[j] a j a[j-1] a j-1 j 1 {
					res++;
				} res++ res System.out.println(res) System.out.println System.out System System.out res sc.close() sc.close sc String[] args args public class Main {
	
		public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		}
		
		
	} public class Main {
	
		public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		}
		
		
	} Main
	import java.util.*;
	
	
	
	public class Main {
	
		public static void main(String[] args) {
		
			Scanner sc = new Scanner(System.in);
			int N = sc.nextInt();
			Integer a[] = new Integer[N];
			for (int i = 0;i<N;i++) {
				a[i] = sc.nextInt();
			}
			
			Arrays.sort(a,Collections.reverseOrder());
			
			int res = 1;
			
			for (int j = 1;j<N;j++) {
				if (a[j] < a[j-1]) {
					res++;
				}
			}
			
			System.out.println(res);
			
			sc.close();
		}
		
		
	}