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

int main() {
    long long N;
    cin >> N;
    map<long long,int>tmp;
    for(long long i = 1; i <= N; i++) {
        tmp[i*i] = 1;
    }
    int ans = 0;
    for(long long i = 1; i <= N; i++) {
        if(tmp.count(N*N-i*i)) {
            ans++;
        }
    }
    cout << ans << endl;
}