#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define ll long long
#define rep(i,n) for (int i = 0; i < (n); i++)
#define coutf(f) cout << fixed << setprecision(f)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()

int main() {
	ll N, ans = 0;
	cin >> N;
	for (ll x = 1; x <= N - 1; x++) {
		ll v = N * N - x * x;
		ll y = sqrt(v);
		if (x * x + y * y == N * N) {
			ans++;
		}
	}
	cout << ans << endl;
	return 0;
}