#include <bits/stdc++.h>
using namespace std;
int main(){
    long long N;
    cin >> N;
    int ans = 0;
    for(long long i = 1; i < N; i++){
        long long temp = N * N - i * i;
        long long ub = N + 1, lb = 0;
        while(ub - lb > 1){
            long long mid = (ub + lb) / 2;
            if(mid * mid >= temp) ub = mid;
            else lb = mid;
        }
        if(ub * ub == temp) ans++;
    }   
    cout << ans << endl;
}