#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    ll N;
    cin >> N;

    ll ans = 0LL;
    for(ll x = 1LL; x <= N; ++x){
        ll z = N*N - x*x;
        ll r = ll(2e5 + 10), l = 0LL;
        while(r != l + 1LL){
            ll mid = (r + l)/2LL;
            if(mid * mid >= z) r = mid;
            else l = mid;
        }
        if(r*r == z){
            // cout << x << ' ' << r << endl;
            ans++;
        }
    }
    cout << ans << endl;

    return 0;
}