N = int(input())
ans = 0
n = int(pow(N,0.5))
L = set([i**2 for i in range(1,n+1)])
#print(L)
for i in range(1,n+1):
    if N - i ** 2 in L:
        ans += 1
        #print(i,N-i**2)
print(ans)