#include <bits/stdc++.h>
using namespace std;
int main(){
    int a[60]={0},n,i,c=0;
    cin>>n;
    for(i=0;i<n;i++){
    	cin>>a[i];
    }
    for(i=0;i<n;i++){
    	if(a[i]>=90){
    		c++;
    	}
    }
    cout<<c;
}

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