#include <bits/stdc++.h>

using std::cin;
using std::cout;
using ll = long long;

int main() {
	int n;
	cin >> n;
	
	ll ans = 0;
	for (int i = 2; i < n; ++i) {
		ll j = 1ll * n * n - 1ll * i * i;
		ll x = sqrt(j);
		if (x * x == j) ans++;
	}
	
	cout << ans << '\n';
	
	return 0;
}