#include<iostream>
using namespace std;
int main(){
    int a[100]={0},n,i,h=0;
    cin>>n;
    for(i=0;i<n;i++){
        cin>>a[i];
        if(a[i]>=90){
            h++;    
        }           
    }
    cout<<h;
       
}
/**************************************************************
	Problem: 1423
	User: huanghengyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/