func_code_string: #include <bits/stdc++.h>   using std::abs;   using std::cerr;   using std::cin;   using std::cout;   using std::map;   using std::max;   using std::min;   using std::pair;   using std::set;   using std::string;   using std::swap;   using std::vector;   using ll = long long;   using uint = unsigned int;   using pii = pair<int, int>;   using pll = pair<ll, ll>;   template <typename T>   void err(vector<string>::iterator it, T a) {     cerr << it->substr((*it)[0] ==    ) <<   =   << a <<   n ;   }   template <typename T, typename... Ts>   void err(vector<string>::iterator it, T a, Ts... as) {     cerr << it->substr((*it)[0] ==    ) <<   =   << a <<  ,  ;     err(++it, as...);   }   struct init {     init() {       cin.tie(0);       std::iostream::sync_with_stdio(0);       cout << std::fixed << std::setprecision(10);       cerr << std::fixed << std::setprecision(10);       srand(228);     }     ~init() {       cerr <<  Time elapsed:   << 1.0 * (double)clock() / CLOCKS_PER_SEC            <<  s. n ;     }   } init;   const int MAXN = 1001, INF = 1e9 + 7;   int ans[MAXN];   vector<int> wo[MAXN];   int ret[20][MAXN];   int main() {     int n;     cin >> n;     for (int step = 1, pw = 0; step < n; step *= 2, ++pw) {       vector<int> q0, q1;       for (int i = 0; i < n; i += step * 2) {         for (int j = 0; j < step && i + j < n; ++j) {           wo[i + j].emplace_back(pw * 2 + 1);           q0.emplace_back(i + j);         }         for (int j = step; j < step + step && i + j < n; ++j) {           q1.emplace_back(i + j);           wo[i + j].emplace_back(pw * 2);         }       }       if (!q0.empty()) {         cout << q0.size() <<   n ;         for (int i : q0) cout << i + 1 <<    ;         cout << std::endl;         for (int i = 0; i < n; ++i) cin >> ret[pw * 2][i];       }       if (!q1.empty()) {         cout << q1.size() <<   n ;         for (int i : q1) cout << i + 1 <<    ;         cout << std::endl;         for (int i = 0; i < n; ++i) cin >> ret[pw * 2 + 1][i];       }     }     cout <<  -1 n ;     for (int i = 0; i < n; ++i) {       int mn = INF;       for (int j : wo[i]) mn = min(mn, ret[j][i]);       cout << mn <<    ;     }     cout << std::endl;     return 0;   }   