import sys
# sys.setrecursionlimit(10 ** 9)  # Codeforcesでは350000程度に
def input(): return sys.stdin.readline().strip()


n = int(input())

ans = 0
n2 = n**2
for x in range(1, n):
    y_can_2 = n**2 - x**2
    y_can = int(y_can_2**0.5)
    for y in range(y_can-1, y_can+2):
        if y > 0 and y**2 == y_can_2:
            ans += 1
            break
print(ans)