#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <cmath>
#include <map>
#include <queue>
#include <string>
#include <string.h>

#define reps(i,s,n) for(int (i) = (s); (i) < (n); (i)++)
#define rep(i,n) reps(i,0,n)
using namespace std;
using ll = long long;
using pii = pair<int,int>;
using vi = vector<int> ;
using vl = vector<ll>;

int main(){
    ll n;
    cin >> n;
    n = n * n;
    map<ll,ll> mp;
    for(ll x = 1; x*x <= n; x++){
        mp[x*x]++;
        //cout << x << ":" << x*x << endl;
    }
    //cout << mp.size() << endl;
    int ans = 0;

    for(auto e: mp){
        if(mp.count(n-e.first)==1){
            ans++;
        }
    }

    cout << ans << endl;
    return 0;
}