mod = 998244353
inv2 = pow(2,mod-2,mod)

N,K = map(int, input().split())
LSB = [list(map(int, input().split())) for _ in range(K)]
applicant = [0] * N

for i in range(K):
    S = LSB[i][1]
    for e in LSB[i][2:]:
        applicant[e-1] |= S

ans = 0
for i in range(N):
    for bit in range(30):
        if (applicant[i] >> bit) & 1:
            ans += (1 << bit) * inv2
            ans %= mod

print(ans)