import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################

"""

s[1], s[2], ..., s[k] をそれぞれ1/2で選んだXOR の期待値

"""

n, k = na()

f = [0] * n
for _ in range(k):
    l, s, *b = na()
    b = [x-1 for x in b]
    for i in b:
        f[i] |= s

mod = 998244353

ans = 0
for i in range(n):
    ans += f[i]

print(ans * pow(2, mod-2, mod) % mod)