#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,sum=0;int a[101];
	cin>>n;
		for(int i=0;i<n;i++){
			cin>>a[i];
		}
		for(int i=0;i<n;i++){
			if(a[i]>=90){
				sum++;			
			}
		}
		cout<<sum;
		
	return 0;
}
/**************************************************************
	Problem: 1423
	User: zy002
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/