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

ll int_sqrt(ll n){
  if(n<2)return n;
  ll x0=n/2,x1=(x0+n/x0)/2;
  while(x1<x0){
    x0=x1;
    x1=(x0+n/x0)/2;
  }
  return x0;
}

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