import sys, time, random
from collections import deque, Counter, defaultdict
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 63 - 1
mod = 998244353
def det(n, a, mod):
    ret = 1
    for i in range(n):
        if a[i][i] == 0:
            for j in range(i + 1, n):
                if a[j][i]:
                    break
            else:
                return 0
            a[j], a[i] = a[i], a[j]
            ret *= -1
            ret %= mod

        for j in range(n):
            if i < j:
                buf = a[j][i] * (pow(a[i][i], mod - 2, mod))
                buf %= mod
                for k in range(n):
                    a[j][k] -= a[i][k] * buf

                    a[j][k] %= mod
    for i in range(n):
        ret *= a[i][i]
        ret %= mod
    return ret
n, k = mi()
E = []
for _ in range(k):
    t = ii()
    E.append([li() for _ in range(t)])

ans = 0
for bit in range(1 << k):
    A = [[0] * n for _ in range(n)]
    cnt = 0
    for i in range(k):
        if 1 & (bit >> i):
            cnt += 1
            for a, b in E[i]:
                A[a - 1][b - 1] -= 1
                A[b - 1][a - 1] -= 1
                A[a - 1][a - 1] += 1
                A[b - 1][b - 1] += 1
    p = det(n - 1, A, mod)
    ans += pow(-1, k - cnt) * p
    ans %= mod
print(ans)