#include<iostream>
using namespace std;
int main(){
	int a[100]={0},n,i,h=0;
	cin>>n;
	for(i=0;i<n;i++){
	    cin>>a[i];
		if(a[i]>=90){
		    h++;	
		}			
	}
	cout<<h;
	  
}
/**************************************************************
	Problem: 1423
	User: wngjinming
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/