import sys

sys.setrecursionlimit(10 ** 6)
stdin = sys.stdin

ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
ns = lambda: stdin.readline().strip()
nsa = lambda: list(map(str, stdin.readline().split()))
ntp = lambda: tuple(map(int, stdin.readline().split()))
mod = 10 ** 9 + 7
inf = 10 ** 18

n = ni()

st = set()
for i in range(1, n):
    st.add(i ** 2)


n *= n
ans = 0
for i in st:
    if (n - i) in st:
        ans += 1

print(ans)