#include <bits/stdc++.h>
using namespace std;

int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  int i;
  int count,count_all=0,0;
  vector<int> b(8);
  for(i=0;i<8;i++){
    b[i] = 0;
  }
  for(i=0;i<n;i++){
    cin >> a[i];
  }
  sort(a.begin(), a.end());
  for(i=0;i<n;i++){
    if(a[i]<=399&&b[0]==0){
      count++;
      b[0]=1;
      if(a[i]<=799&&b[1]==0){
        count++;
        b[1]=1;
        if(a[i]<=1199&&b[2]==0){
          count++;
          b[2]=1;
          if(a[i]<=1599&&b[3]==0){
            count++;
            b[3]=1;
            if(a[i]<=1999&&b[4]==0){
              count++;
              b[4]=1;
              if(a[i]<=2399&&b[5]==0){
                count++;
                b[5]=1;
                if(a[i]<=2799&&b[6]==0){
                  count++;
                  b[6]=1;
                  if(a[i]<=3199){
                    count++;
                    b[7]=1;
                  }else if(count_all<=8-count){
                    count_all++;
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  cout << count + count_all;
}
