import math

n = int(input())
assert n <= 10**7
ans = 0
sqrt = int(n ** .5) + 1
for b in range(1, sqrt):
    for a in range(b + 1, sqrt):
        p = a**2 + b**2
        if p%4 != 1: continue
        if math.gcd(a, b) != 1: continue
        q = a**2 - b**2
        r = 2 * a * b
        ans += n // (p + q + r)

print(ans)