#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,j=0,i;  
	int a[110]={};
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
	}
	i=0;
	while(i<n){
		if(a[i]>=90){
		j++;
		}i++;
	}cout<<j;
}
/**************************************************************
	Problem: 1423
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/