#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for (int i = 0; i < (int)(n); i++)
#define RREP(i, n) for (int i = (int)(n); i >= 0; i--)
#define rep(i, a, n) for (int i = (a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = (a); i >= (int)(n); i--)
#define ALL(obj) (obj).begin(), (obj).end()
#define rALL(obj) (obj).rbegin(), (obj).rend()
using ll = long long;
using vi = vector<int>;
using vii = vector<vector<int>>;
using P = pair<int, int>;

int main() {
    ll N;
    cin >> N;
    ll cnt = 0;
    rep(i,1,N) {
        ll x = i;
        ll y = sqrt(1LL * N*N - x*x);
        if( x*x+y*y == N*N ) cnt++;
    }
    cout << cnt << endl;
    return 0;
}