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

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