#include <iostream>

long long sqrtll(long long v) {
    long long ok = 0, ng = 1'000'000'000;
    
    while (ng - ok > 1) {
        const long long mid = ok + (ng - ok) / 2;
        (mid * mid <= v ? ok : ng) = mid;
    }

    return ok;
}

int main() {
    long long N;
    std::cin >> N;

    long long res = 0LL;

    for (long long x = 1; x < N; ++x) {
        const long long y = sqrtll(N * N - x * x);
        res += (x * x + y * y == N * N);
    }

    std::cout << res << '\n';
}