L = int(input())
from math import gcd
N = L//4
# (x,y,z)=(2MN,M**2-N**2,M**2+N**2)
# SUM=2M(M+N)
N = N//2
A = set()
for i in range(1, N+1):
    if i**2 > N:
        break
    else:
        for j in range(1, N//i+1):
            if i < j:
                m = i
                n = j-i
                if m > n > 0:
                    P = [2*m*n, m**2-n**2, m**2+n**2]
                    P.sort()
                    if gcd(P[0],gcd(P[1],P[2]))==1:
                        A.add(tuple(P))
print(len(A))