N = int(input())
P = 998244353

def lcm(a,b):
    u,v = a,b
    while True:
        r = a % b
        a = b
        b = r
        if r == 0:
            break
    return u // a * v % P
ans = 1
i = 1
while i <= N - i:
    ans = lcm(ans,i * (N - i))
    i += 1
print(ans)