#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
using namespace std;
typedef long long ll;
const int mod=1e9+7;
int main(){
	ll n;
	cin>>n;
	int ans=0;
	for(ll i=1;i<n;i++){
		ll j=sqrt(n*n-i*i);
		if(i*i+j*j==n*n)
			ans++;
	}
	cout<<ans<<endl;
}