#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[100]={0},n,i,z=0;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];	
	}
	for(i=0;i<n;i++){
		if(a[i]>=90){
			z=z+1;	
		}
	}
	cout<<z;
}


/**************************************************************
	Problem: 1423
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/