#include <bits/stdc++.h>
using namespace std;

int main(void) {
    long long n;
    cin>>n;
    set<long long> st;
    for (long long i = 1; i <= n; ++i) st.insert(i*i);
    int ans = 0;
    for (long long i = 1; i <= n; ++i) {
        ans += st.count(n*n-i*i);
    }
    cout << ans << endl;
}