#include <atcoder/all>
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
using namespace atcoder;
using namespace std;
using ll = long long;
using ull = unsigned long long;
using mll = static_modint<998244353>;
#define rep(i,n) for(int i=0; i<(n); i++)

int main(){
  ll N; cin >> N;
  set<ll> G;
  int ans = 0;
  for(ll x = 1; x < N; x++) G.insert(x*x);
  for(ll x = 1; x < N; x++) ans += G.count(N*N - x*x);
  cout << ans << endl;
  return 0;
}

struct ios_do_not_sync{
  ios_do_not_sync(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
  }
} ios_do_not_sync_inst;