import sys
input = sys.stdin.readline
N = int(input())
mod = 998244353

class sieve:
  def __init__(self, n):
    self.n = n
    self.sv = [1] * (n + 1)
    self.sv[0] = 0
    self.sv[1] = 0
    for i in range(2, n + 1):
      if self.sv[i]:
        for j in range(i * 2, n + 1, i):
          self.sv[j] = 0
  def isprime(self, x):
    if x > self.n:
      return False
    return self.sv[x] == 1
  def factorize(self, x):
    res = []
    for i in range(2, int(x ** 0.5) + 1):
      if self.sv[i]:
        while x % i == 0:
          x //= i
          res.append(i)
    if x != 1:
      res.append(x)
    return res
  def modlcm(self, a, mod):
    res = [0] * (self.n + 1)
    ex = set()
    for i in range(len(a)):
      f = self.factorize(a[i])
      for j in f:
        if j > self.n:
          ex.add(j)
          continue
        res[j] = max(f.count(j), res[j])
    rres = 1
    for i in range(self.n + 1):
      if res[i] != 0:
        rres *= pow(i, res[i], mod)
        rres %= mod
    for i in ex:
      rres *= i
      rres %= mod
    return rres

sv = sieve(N)
a = [x * (N - x) for x in range(1, N // 2 + 1)]
print(sv.modlcm(a, mod))