func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, ans1, ans2, nr, x;   vector<int> v;   int main() {     cin >> n;     for (int i = 1; i <= n; ++i) {       cin >> nr;       for (int j = 1; j <= nr; ++j) {         cin >> x;         if (nr % 2 == 1 && j == (nr + 1) / 2) {           v.push_back(-x);           continue;         }         if (j <= nr / 2)           ans1 += x;         else           ans2 += x;       }     }     sort(v.begin(), v.end());     for (int i = 0; i < v.size(); ++i) {       if (i % 2 == 0)         ans1 -= v[i];       else         ans2 -= v[i];     }     cout << ans1 <<     << ans2;     return 0;   }   