#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,sum=0; 
    cin>>n;
    int a[105];
    for(int i=0;i<n;i++){
    	cin>>a[i];
    }
    for(int i=0;i<n;i++){
    	if(a[i]>=90)sum++;
    }
    
    cout<<sum;
	return 0;
}

/**************************************************************
	Problem: 1423
	User: LYY001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/