#include <iostream>
#include <cmath>
#include <cassert>
using namespace std;

long long N;
long long Answer = 0;

int main() {
	cin >> N;
	assert(1 <= N && N <= 200000);
	for (int x = 1; x <= N - 1; x++) {
		long long V = N * N - 1LL * x * x;
		long long y = (long long)(sqrt(1.0 * V));
		if (x * x + y * y == N * N) Answer++;
	}
	cout << Answer << endl;
	return 0;
}