#include <bits/stdc++.h>
template<class T> inline bool chmin(T&a, T b){if(a > b){a = b; return true;}else{return false;}}
template<class T> inline bool chmax(T&a, T b){if(a < b){a = b; return true;}else{return false;}}
#define ll long long
#define double long double
#define rep(i,n) for(int i=0;i<(n);i++)
#define REP(i,n) for(int i=1;i<=(n);i++)
#define mod (ll)(1e9+7)
#define inf (ll)(3e18+7)
#define eps (double)(1e-9)
#define pi (double) acos(-1)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
using namespace std;

int main(){
    ll n, ans = 0;
    cin >> n;
    map<ll, bool> mp;
    for(ll i = 1; i <= n; i++)mp[i*i] = true;
    for(ll i = 1; i <= n; i++){
        if(mp[n*n-i*i]){
            ans++;
        }
    }
    cout << ans << endl;
}