#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5 + 500;
int a[maxn];
int main(void) {
  int n, m;
  cin >> n >> m;
  int ans = 0;
  for (int i = 1; i <= m; i++) {
    int num;
    scanf("%d", &num);
    int x, temp;
    int flag = 0;
    scanf("%d", &x);
    temp = x;
    if (x == 1) flag = 1;
    for (int j = 2; j <= num; j++) {
      scanf("%d", &x);
      if (flag == 1 && x == temp + 1) {
        temp = x;
        continue;
      }
      if (x == 1) {
        temp = x;
        flag = 1;
      } else {
        flag = 0;
        ans++;
      }
    }
  }
  ans = ans + ans + m - 1;
  cout << ans << endl;
}
