#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[100] = {0};
	int n,i,c = 0;
	cin>>n;
	for(i = 0;i < n;i++){
	cin>>a[i];
	}
	for(i = 0;i < n; i++){
	if(a[i] >= 90) c++;
	}
	cout<<c<<endl;
}
/**************************************************************
	Problem: 1423
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/