func_code_string: #include <bits/stdc++.h>   using namespace std;   bool comp(int& a, int& b) { return b < a; }   int main() {     int n;     cin >> n;     vector<pair<int, int>> source(n), team1, team2;     long long sum_team1 = 0, sum_team2 = 0;     for (int i = 0; i < n; ++i) {       cin >> source[i].first;       source[i].second = i;     }     sort(source.begin(), source.end());     int i = 0, par = 1;     while (!source.empty()) {       if (par) {         team1.push_back(source.back());         source.pop_back();         par = 0;         sum_team1 += team1.back().first;       } else {         team2.push_back(source.back());         source.pop_back();         par = 1;         sum_team2 += team2.back().first;       }     }     cout << team1.size() <<   n ;     for (int i = 0; i < team1.size(); ++i) cout << team1[i].second + 1 <<    ;     cout <<   n ;     cout << team2.size() <<   n ;     for (int i = 0; i < team2.size(); ++i) cout << team2[i].second + 1 <<    ;     return 0;   }   