#include <bits/stdc++.h>
using namespace std;
int main() {
    int n,a[100],h;
    cin>>n;
    for(int i=0;i<=n-1;i++){
    	cin>>a[i];
    	if(a[i]>=90) h++;
    }
    cout<<h;
}
/**************************************************************
	Problem: 1423
	User: wangyiyang
	Language: C++
	Result: Wrong Answer
****************************************************************/