from collections import defaultdict
N,M=map(int,input().split())
N+=1
A=[list(map(int,input().split()))[1:] for _ in range(M)]

fact=list(range(N))
pset=set()
for i in range(2,N):
	if fact[i]!=i: continue
	pset.add(i)
	fact[i]=1
	for j in range(2*i,N,i):
		if fact[j]==j:
			fact[j]//=i

def exf(n):
	res=defaultdict(int)
	while n>1:
		res[n//fact[n]]+=1
		n=fact[n]
	return res

P=list(range(N))
Q=list(range(N))
for a in A:
	if len(a)==1: continue
	for i in range(len(a)-2,-1,-1):
		p,q=a[i:i+2]
		Q[P[p]],Q[P[q]]=Q[P[q]],Q[P[p]]
		P[p],P[q]=P[q],P[p]

seen=[0]*N
state=defaultdict(int)
for i in range(N):
	if seen[i]: continue
	if i==Q[i]:
		seen[i]=1
		continue
	ct=1
	p,q=P[i],Q[i]
	seen[p]=seen[q]=1
	while p!=i:
		q=p
		p=P[p]
		ct+=1
		seen[p]=1
	v=exf(ct)
	for k in v:
		state[k]=max(state[k],v[k])

MOD=998244353
ans=1
for k in state:
	ans*=pow(k,state[k],MOD)
	ans%=MOD
print(ans)