#include <iostream>
using namespace std;


long cnt;
int k;
int a[19];

int main() {
	for (int i = 1; i <= 10; ++i) {
		cin >> a[i];

	}
	cin >> k;
	k = k + 30;
	for (int i = 1; i <= 10; ++i) {
		if (a[i] >= k) {
			cnt++;
		}
	}
	cout << cnt;


	return 0;
}