MOD = 998244353

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

XOR = [0]*N
for _, S, *B in LSB:
    for b in B:
        for i in range(30):
            if 1<<i & S:
                XOR[b-1] |= 1<<i

print(sum(XOR)%MOD*pow(2, -1, MOD)%MOD)