import sys
input = sys.stdin.readline

N,K=list(map(int,input().split()))

ANS=[[0]*31 for i in range(N+1)]

for i in range(K):
    L=list(map(int,input().split()))
    S=L[1]
    L=L[2:]

    for j in range(31):
        if S&(1<<j) != 0:
            for x in L:
                ANS[x-1][j]=1

LANS=0

for i in range(N+1):
    for j in range(31):
        if ANS[i][j]==1:
            LANS+=(1<<j)


mod=998244353
print(LANS*pow(2,mod-2,mod)%mod)