#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main()
{
    ll n, cnt = 0;
    cin >> n;
    for (ll i = 1; i < n; i++){
        ll t = pow(n*n - i*i, 0.5);
        if (t*t + i*i == n*n)cnt++;
    }
    cout << cnt << endl;
}