import sys
import math
input = lambda: sys.stdin.readline().rstrip()

#  -----------------------  #

n = int(input())
ans = 0
for x in range(1, 200001):
  y2 = n*n - x*x
  if y2 > 0 and math.sqrt(y2) % 1 == 0:
    ans += 1
print(ans)