#include <bits/stdc++.h>

using namespace std;
const int N = 15;
int a[N], height;
int cnt;
int main() {
    for (int i = 1; i <= 10; i++) cin >> a[i];
    cin >> height;

    for (int i = 1; i <= 10; i++)
        if (a[i] <= height + 30) cnt++;

    cout << cnt << endl;
    return 0;
}