mod = 998244353
N = int(input())
if N % 2 == 1:
    print(0)
    exit()

N //= 2
ans = [0] * (N + 1)

catalan = 1

for i in range(2, N + 1):
    ans[i] = (ans[i - 1] + catalan * (i - 1)) % mod
    for j in range(1, i):
        ans[i] += ans[j] * ans[i - j] % mod
        ans[i] %= mod
    catalan = catalan * 2 * (2 * i - 1) * pow(i + 1, -1, mod) % mod

print(ans[N])