n = int(input())
N = n**2
zero = False
ans = 0
for y in range(1,n):
    Y = N-y**2
    ok, ng = 1, N+1
    while(abs(ok-ng) > 1):
        mid = (ok+ng)//2
        if mid**2 <= Y:
            ok = mid
        else:
            ng = mid
    if ok**2 == Y:
        ans += 1
if zero:
    ans += 1
print(ans)