#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,c=0;
	cin>>n;
	int a[200];
	for(int i=1;i<=n;i++){
		cin>>a[i];
		if(a[i]>=90) c++;
	}
	cout<<c;
}

/**************************************************************
	Problem: 1423
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/