import math
import sys


def input(): return sys.stdin.readline().rstrip('\n')


def main():
    c = 0
    n = int(input())
    for x in range(1, n):
        y = math.isqrt(n*n-x*x)
        if x*x+y*y == n*n:
            c += 1
    print(c)


if __name__ == '__main__':
    main()