import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] fel = new int[]{3, 5, 17, 257, 65537};
        HashSet<Long> set = new HashSet<>();
        for (int i = 0; i < Math.pow(2, 6); i++) {
            int x = i;
            long value = 1;
            for (int j = 0; j < 5; j++) {
                if (x % 2 == 1) {
                    value *= fel[j];
                }
                x /= 2;
            }
            set.add(value);
        }
        int count = 0;
        for (long x : set) {
            while(x <= n) {
                if (x > 2) {
                    count++;
                }
                x *= 2;
            }
        }
        System.out.println(count);
    }
}