11053.cc

//
//  11053.cpp
//  AlgorithmTest
//
//  Created by 김무열 on 2017. 4. 14..
//  Copyright © 2017년 김무열. All rights reserved.
//

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;


int main(void){
    int n, cnt = 1;
    cin >> n;
    vector<int> a(n);
    for(int i = 0 ; i< n ; i++){
        cin >> a[i];
    }
    sort(a.begin(), a.end());
    reverse(a.begin(), a.end());
    
    
    for(int i = 1; i<n ; i++){
        if(a[i] < a[i-1]){
            ++cnt;
        }
    }
    
    
    
    cout << cnt << '\n';
    
    
    return 0;
}