#include<bits/stdc++.h>
using namespace std;
int n,a[105],z,i;
int main(){
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
	}
	for(i=0;i<n;i++){
		if(a[i]>=90) z++;
	}
	cout<<z;
	return 0;
}
/**************************************************************
	Problem: 1423
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/