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

struct iofast_t {
    iofast_t() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} iofast;

struct uns_t {} uns;
template <typename Element, typename Head, typename ...Args>
auto vec(Element init, Head arg, Args ...args) {
    if constexpr (sizeof...(Args) == 0) return std::vector(arg, init);
    else return std::vector(arg, vec(init, args...));
}
template <typename Element, typename Head, typename ...Args>
auto vec(uns_t, Head arg, Args ...args) {
    return vec(Element(), arg, args...);
}

template <typename T, typename Compare = less<T>>
T &chmin(T &l, T r, Compare &&f = less<T>()) { return l = min(l, r, f); }
template <typename T, typename Compare = less<T>>
T &chmax(T &l, T r, Compare &&f = less<T>()) { return l = max(l, r, f); }

int main() {
    int64_t n; cin >> n;

    auto sqrt = [](int64_t x) {
        __int128_t l = 0, r = x + 1;
        while (1 < r - l) {
            auto m = l + (r - l) / 2;
            if (m * m <= x) {
                l = m;
            }
            else {
                r = m;
            }
        }
        return int64_t(l);
    };

    int ans = 0;
    for (int64_t x = 1; 0 < n * n - x * x; ++x) {
        auto s = sqrt(n * n - x * x);

        if (s * s == n * n - x * x) {
            ++ans;
        }
    }

    cout << ans << endl;
}