import java.util.Scanner;


public class Main_yukicoder152 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int l = sc.nextInt();

        int ret = 0;
        for (int n = 1; n * n < l; n++) {
        	for (int m = n + 1; m * m < l; m += 2) {
        		if (gcd(n, m) != 1) {
        			continue;
        		}

        		int tmp = m * (m + n) * 2;
        		if (tmp * 4 <= l) {
        			ret ++;
        		}
        	}
        }

        System.out.println(ret);

        sc.close();
    }

	private static int gcd(int n, int m) {
		if (m == 0) {
			return n;
		} else {
			return gcd(m, n % m);
		}
	}
}