n,m=(int(x) for x in input().split())

ans=2*n-m-1

for i in range(m):

    a=[int(x) for x in input().split()]

    for j in range(1,a[0]):

        if a[j+1]==j+1 and a[j]==j:ans-=2

        else:break

print(ans)



# Made By Mostafa_Khaled