#include<iostream>
using namespace std;
int main()
{
	int arr[9], i, a,b,sum=0;
	
		for (i = 0; i <=9;i++)
		{
			cin >> a;
			a = arr[i];
		}
		cin >> b;
		b = b + 30;
		for (i = 0; i <=9; i++)
		{
			if (arr[i] < b )
			{
				sum++;
			}
		}
		cout << sum << endl;
## }