#ifdef _DEBUG
    #include <atcoder/all.h>
    #define debug(x) std::cout << #x << ": " << x << std::endl
#else
    #include <bits/stdc++.h>
    #include <atcoder/all>
    //#pragma GCC target("arch=skylake-avx512")
    #pragma GCC optimize("O3")
    #pragma GCC optimize("unroll-loops")
    #define debug(x)
#endif
using namespace std;
using namespace atcoder;
using ll = long long;
#define rep(...) _overloadrep(__VA_ARGS__, _rep4, _rep3, _rep2)(__VA_ARGS__)
#define _overloadrep(_1, _2, _3, _4, _repn, ...) _repn
#define _rep2(i, n) _rep4(i, 0, n, 1)
#define _rep3(i, a, b) _rep4(i, a, b, 1)
#define _rep4(i, a, b, s) for (auto i = (a); i < (b); i += (s))
#define repr(i, a, b) for (auto i = (b)-1; i >= (a); --i)
#define all(x) (x).begin(), (x).end()
#define siz(x) int((x).size())
template<class T1, class T2> inline bool chmax(T1 &a, const T2 &b) { if (a < b) { a = b; return true; } return false; }
template<class T1, class T2> inline bool chmin(T1 &a, const T2 &b) { if (a > b) { a = b; return true; } return false; }
constexpr char enl = '\n';
constexpr int dx[] = {1, 0, -1, 0, 1, -1, -1, 1};
constexpr int dy[] = {0, 1, 0, -1, 1, 1, -1, -1};
constexpr long double eps = 1e-10;
constexpr int INF = 1010000000;  // 1e9
constexpr ll llINF = 3010000000000000000LL;  // 3e18
constexpr ll MOD = 1000000007LL;
//constexpr ll MOD = 998244353LL;
using mint = static_modint<MOD>;

void Main([[maybe_unused]] int testcase_i) {
    ll n; cin >> n;
    n *= n;
    unordered_set<ll> s;
    for (ll i = 1; i * i < n; ++i) {
        s.insert(i*i);
    }
    ll ans = 0;
    for (auto x : s) if (s.count(n-x)) ++ans;
    cout << ans << enl;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
    int t = 1;
    //cin >> t;
    rep(i, t) Main(i);
}