from math import isqrt

def factorization(n):
    arr = []
    temp = n
    for i in range(2, isqrt(n)+1):
        if temp%i == 0:
            cnt = 0
            while temp%i == 0:
                cnt += 1
                temp //= i
            arr.append([i, cnt])
    if temp != 1:
        arr.append([temp, 1])
    if arr == []:
        arr.append([n, 1])
    return arr

N = int(input())

if N == 1:
    exit(print(1))

fact = factorization(N)
ans = 1
for n, c in fact:
    ans *= -1
    if 2 <= c:
        ans *= 0

print(ans)