#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[20],n,i=0,h=0;
	cin>>n;
	for(i=0;i<n;i++){
	    cin>>a[i];
	    if(a[i]>=90){
	        h++;
	}
		
}cout<<h;
}
/**************************************************************
	Problem: 1423
	User: wengsihan
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/