#!/usr/bin/env python3
# %%
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines


# %%
# import numpy as np
# from numba import njit

# %%
def gen_pythagorean_triples(bound):
    """generate primitive pythagorean triples.


    Parameters
    ----------
    bound : int
        upper bound of pelimeter of the triangle

    Yields
    -------
    tuple(int, int, int)
        primitive pythagorean triangles
    """
    if bound <= 12:
        return
    yield (3, 4, 5)
    stack = [(3, 4, 5)]
    while stack:
        a, b, c = stack.pop()
        for x, y, z in [
                (a - 2 * b + 2 * c, 2 * a - b + 2 * c, 2 * a - 2 * b + 3 * c),
                (a + 2 * b + 2 * c, 2 * a + b + 2 * c, 2 * a + 2 * b + 3 * c),
                (-a + 2 * b + 2 * c, -2 * a + b + 2 * c, -2 * a + 2 * b + 3 * c)]:
            if x + y + z < bound:
                yield (x, y, z)
                stack.append((x, y, z))


# %%
L = int(readline())

# %%
N = L // 4
answer = sum(1 for x in gen_pythagorean_triples(N + 1))
print(answer)