#!/usr/bin/env python3
# from typing import *

import sys
import io
import math
import collections
import decimal
import itertools
import bisect
import heapq


def input():
    return sys.stdin.readline()[:-1]


# sys.setrecursionlimit(1000000)

# _INPUT = """5
# """
# sys.stdin = io.StringIO(_INPUT)

INF = 10**10


N = int(input())

n = 0
x = 1
while True:
    if x*x + 1 > N*N:
        break
    y = int(math.sqrt(N*N - x*x + 0.001))
    if x*x + y*y == N*N:
        n += 1
    x += 1
print(n)