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


/**************************************************************
	Problem: 1423
	User: jiangyuanfeng
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/