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

/**************************************************************
	Problem: 1423
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/