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

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