#include <bits/stdc++.h>
using namespace std;

long long n, m = 0;

int main()
{
	cin >> n;

	for (long long i = 1; i * i * 2 < n * n; i++) {
		long long j = (long long)sqrt(n * n - i * i);

		if (i * i + j * j == n * n)
			m += 2;
	}
	
	cout << m << endl;
}