#include <bits/stdc++.h>
using namespace std;
int a[10];
int main()

{
		int max, sum = 0; cin >> max;
	for (int i = 0; i <= 9; i++){
		cin >> a[i];
		if (max + 30 >= a[i]){
			sum++;
		}
		
	}
	cout << sum;

}