#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef pair<ll,ll> P;
typedef modint1000000007 mint;
#define rep(i,a,b) for(ll i=a;i<b;i++)
#define rrep(i,a,b) for(ll i=a;i>=b;i--)
const ll inf=1e12;
ll n;
ll ans;
int main(void){
    cin.tie(0);
    ios::sync_with_stdio(0);
    cin>>n;
    rep(x,1,n){
        ll y=n*n-x*x;
        ll Y=sqrt(y);
        if(Y*Y==y) ans++;
    }
    cout<<ans<<endl;
}