#include<iostream>
using namespace std;
int main(){
	int n = 10;
	int apple[n];
	int h;
	int sum;
	for(int i = 0;i < n;i ++){
		cin >> apple[i];
	}
	cin >> h;
	for(int i = 0;i < n;i ++){
		if(apple[i] <= h + 30){
			sum ++;
		}
	}
	cout << sum << endl;
	return 0;
}