import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        long n = sc.nextInt();
        HashSet<Long> squares = new HashSet<>();
        for (long i = 1; i <= n; i++) {
            squares.add(i * i);
        }
        long target = n * n;
        int count = 0;
        for (long i = 1; i <= n && i * i <= target - i * i; i++) {
            if (squares.contains(target - i * i)) {
                count++;
                if (i * i != target - i * i) {
                    count++;
                }
            }
        }
        System.out.println(count);
    }
}


class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}