#include <bits/stdc++.h>
using namespace std;
using ll = long long;

ll solve() {
    ll N;
    cin >> N;
    ll ans = 0, y = N;
    for ( ll x = 1; x < N; x++ ) {
        while ( x*x + y*y > N*N ) y--;
        if ( x*x + y*y == N*N ) ans++;
    }
    return ans;
}

int main() {
    auto ans = solve();
    cout << ans << "\n";
    return 0;
}