#n = int(input())
n, m = map(int, input().split(" "))
luck = 0
total = 2*n-1 -m

for j in range(m):
    arr = input().split(" ")
    for i in range(1, int(arr[0])+1):
        arr[i] = int(arr[i])
    arr.pop(0)
    prev = arr[0]-1
    potential = -1
    for i in arr:
        #count luck
        if i == prev+1:
            potential += 1
            prev = i
        else:
            break
    luck += potential
    
print (total - luck*2)
