import java.util.Scanner;

public class F {
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int n = cin.nextInt();
        int m = cin.nextInt();
        int cnt = 0;
        for (int i = 0; i < n; i++) {
            if (m + 30 >= cin.nextInt()) ++cnt;
        }
        System.out.println(cnt);
        cin.close();
    }
}