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

/**************************************************************
	Problem: 1423
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/