func_code_string: #include <bits/stdc++.h>   using namespace std;   int mabs(int a) {     if (a < 0)       return -a;     else       return a;   }   bool vis[4010];   int main() {     int x, k;     int t, n1, n2;     cin >> x >> k;     for (int i = 0; i < k; ++i) {       cin >> t;       if (t == 2) {         cin >> n2;         vis[n2] = true;       } else {         cin >> n2 >> n1;         vis[n2] = vis[n1] = true;       }     }     vector<int> v;     for (int i = 1; i < x; ++i)       if (!vis[i]) v.push_back(i);     int ret = 0;     for (int i = 1; i < v.size(); ++i) {       if (v[i] - v[i - 1] == 1) ++ret, ++i;     }     cout << ret + v.size() - ret * 2 <<     << v.size() << endl;     return 0;   }   