#include <bits/stdc++.h>
using namespace std;
int main() {
  int already = 0;
  int n, k;
  cin >> n >> k;
  int ans = 0;
  for (int i = 0; i < k; ++i) {
    int cnt;
    cin >> cnt;
    int first;
    cin >> first;
    if (first == 1) {
      int good = 1;
      already = 1;
      --ans;
      while (good < cnt) {
        cin >> first;
        if (first == good + 1) {
          ++good;
          already = good;
          --ans;
        } else {
          ++good;
          break;
        }
      }
      ans += cnt;
      while (good < cnt) {
        cin >> first;
        ++good;
      }
    } else {
      ans += (cnt - 1);
      for (int j = 1; j < cnt; ++j) cin >> first;
    }
  }
  ans += (n - already);
  cout << ans;
  return 0;
}
