#include <bits/stdc++.h>
using namespace std;
// #include <atcoder/all>
// using namespace atcoder;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define rep1(i,n) for (int i = 1; i <= (n); ++i)
#define quit(a) {cout << a << endl; return 0;}
using ll = long long;
using P = pair<int,int>;
// using mint = modint998244353;
// using mint = modint1000000007;
template <class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template <class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const int INF = 1001001001;
const ll LINF = 1002003004005006007ll;


int main() {
  ll n;
  cin >> n;
  ll n2 = n*n;
  ll ans = 0;
  vector<bool> r(n2+1);
  rep(i,n+1) r[(ll)i*i] = true;
  r[0] = false;
  for (int x = 1; x*x <= n2; ++x){
    if (x*x >= n2) break;
    if (r[n2-x*x]) ++ans;
  }
  cout << ans << endl;
  return 0;
}