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

int main(){
    int n;
    cin >> n;
    
    int ans = 0;
    for(int i=1; i<n; i++){
      //cout << i << endl;
        int low=0, up = n;
        while(up-low>1){
          //cout << low << " < " << up << endl;
            int mid = (up+low)/2;
            if((ll)mid*mid>(ll)n*n-(ll)i*i) up = mid;
            else low = mid;
        }
        //cout << low << ' ' << i << ' ' << (ll) low*low+i*i << endl;
        if((ll)low*low+(ll)i*i == (ll)n*n) ans ++;
    }

    cout << ans << endl;
}