#include <bits/stdc++.h>
using namespace std;
using G=vector<vector<int>>;
typedef long long ll;
#define rep(i,l,r) for(int i=(l);i<(r);++i)

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