#include <bits/stdc++.h>
#define rep(i, l, r) for (int i = (l); i < (r); i++)
using namespace std;

typedef long long ll;

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