MOD = 998244353


def comb(n, r):
    if r < 0:
        return 0
    num = 1
    den = 1
    for i in range(r):
        num = num * (n - i) % MOD
        den = den * (i + 1) % MOD
    return num * pow(den, MOD - 2, MOD) % MOD


N = int(input())
print((comb(N, 2)-N+2+comb(N, 4)*25*pow(36, -1, MOD))%MOD)