using System;
using System.Collections.Generic;
using System.Linq;

class C
{
	static int[] Read() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
	static (int, int) Read2() { var a = Read(); return (a[0], a[1]); }
	static long[] ReadL() => Array.ConvertAll(Console.ReadLine().Split(), long.Parse);
	static void Main() => Console.WriteLine(Solve());
	static object Solve()
	{
		var n = long.Parse(Console.ReadLine());

		var n2 = n * n;
		var p = Enumerable.Range(1, (int)n).Select(x => (long)x * x).ToArray();
		var set = p.ToHashSet();
		return p.Count(x2 => set.Contains(n2 - x2));
	}
}