use std::io;
use std::io::prelude::*;

fn gcd(a: i32, b: i32) -> i32 {
    if a < b {
        gcd(b, a)
    } else if b == 0 {
        a
    } else {
        gcd(b, a % b)
    }
}

fn run(args: &Vec<String>) -> i32 {
    let l: i32 = args[0].parse().expect("number is expected");
    let max_m = (l as f64).sqrt().floor() as i32;
    (2..(max_m + 1)).map(|m| {
        (1..m).filter(|n| {
            (m - n) % 2 == 1 && gcd(m, *n) == 1 && 8 * m * (m + n) <= l
        }).count() as i32
    }).fold(0, |sum, i| sum + i)
}

fn main() {
    let stdin = io::stdin();
    let args = stdin.lock().lines().map(|l| l.unwrap()).collect();
    let r = run(&args);
    println!("{}", r);
}