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

long long ceil_sqrt(const long long x) {
    assert(x >= 0);
    long long ok = 3'037'000'500, ng = -1;
    while (ng + 2 <= ok) {
        const long long mid = (ok + ng) / 2;
        if (mid * mid >= x) ok = mid;
        else ng = mid;
    }
    return ok;
}

int main(void) {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);

    ll N;
    cin >> N;

    ll ans = 0;
    for (ll i = 1; i * i < N * N; i++) {
        ll t = N * N - i * i;
        ll sqrt_t = ceil_sqrt(t);
        if (sqrt_t * sqrt_t == t) ans++;
    }
    cout << ans << "\n";
}