#include<iostream>
using namespace std;
int main()

{
    int a[10], n, y = 0;
    for(int i = 0;i <10;i++ )
    {

        cin >> a[i];
    }
    cin >> n;
    for(int i=0;i<10;i++)
    {
        if(a[i] <= n+30 )y++;
    }

    cout << y << endl;
    return 0;

}