#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: lidongcheng
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/