import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long N = Long.parseLong(sc.next());
		sc.close();
		
		long N2 = N * N;
		
		long cnt = 0;
		for ( long x = 1 ; x < N ; x++ ) {
			long a = N2 - x * x;
			long b = Math.round(Math.sqrt(a));
			long y = -1;
			if ( b * b == a ) {
				y = b;
			} else if ( (b - 1) * (b - 1) == a ) {
				y = b - 1;
			} else if ( (b + 1) * (b + 1) == a ) {
				y = b + 1;
			}
			
			if ( y != -1 ) {
				cnt++;
				//System.out.println(x + "," + y);
			}
		}

		System.out.println(cnt);
	}
}