#include <iostream>
#include <numeric>

void solve() {
    int l;
    std::cin >> l;

    int ans = 0;
    for (int m = 1; m * m <= l; ++m) {
        for (int n = 1; n < m; ++n) {
            int a = m * m - n * n,
                b = m * n * 2;
            if (std::gcd(a, b) != 1) continue;

            int sum = m * 2 * (m + n);
            if (sum * 4 <= l) ++ans;
        }
    }

    std::cout << ans << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}