#include<fstream>

using namespace std;

unsigned long int a[1000];
int n,b[100];

int main()
{
    ifstream fin("secv.in");
    ofstream fout("secv.out");
    
    int i,j,k;
    
    fin>>n;
    
    for(i = 1; i <= n; i++)
          fin>>a[i];
          for(i = 1; i <= n; i++)
          {
                for(j = i+1; j <= n; j++)
                      if(a[i] == a[j])
                      {
                              for(k = j; k <= n; k++)
                                    a[k] = a[k+1];
                                    n--;
                      }
          }
          for(i = 1; i <= n-1; i++)
                if(a[i] > a[i+1])
                {
                        for(k = i; k <= n; k++)
                              a[k] = a[k+1];
                              n--;
                }
            fout<<n;
     fin.close();
     fout.close();
     
     return 0;
}