// 問題の URL を書いておく
// 

#include <bits/stdc++.h>

using namespace std;

//#define ENABLE_PRINT

#if defined(ENABLE_PRINT)

#define Print(v) \
do {\
    cerr << #v << ": " << v << endl; \
}while(0)

#define PrintVec(v) \
do {\
    for(int __i = 0; __i < v.size(); ++__i) \
    { \
        cerr << #v << "[" << __i << "]: " << v[__i] << endl; \
    }\
}while(0)

#define P(fmt, ...) fprintf(stderr, fmt, __VA_ARGS__)
#define LP fprintf(stderr, "L: %d\n", __LINE__)

#else

#define Print(v) ((void)0)
#define PrintVec(v) ((void)0)
#define P(fmt, ...) ((void)0)
#define LP ((void)0)

#endif

#define rep(i, n) for(int i = 0; i < (int)(n); ++i)

using ll = long long;

int main(int, const char**)
{
    ll N;
    cin >> N;
    auto X = N * N;

    set<ll> sq;
    rep(i, N - 1)
    {
        auto x = (ll)i + 1;
        sq.insert(x * x);
    }

    int ans = 0;
    for(ll i = 1; i <= N; ++i)
    {
        auto b = (X - i * i);
        if(sq.find(b) == sq.end()) continue;
        ans++;
    }
    cout << ans << endl;
    return 0;
}