#include <bits/stdc++.h> using namespace std; int main(){ int n; cin >> n; vector<int> unique; int answer[n+1]; for(int i = 1;i <= n;i++){ cout << unique.size() + 1 << " "; for(int x : unique) cout << x << " "; cout << i << " "; cout << endl; int no; cin >> no; if(no == unique.size()){ int low = -1; int high = unique.size(); while(true){ if(low == high - 1) break; int s = (low + high) / 2; cout << s + 2 << " "; for(int j = 0;j <= s;j++){ cout << unique[j] << " "; } cout << i << " "; cout << endl; int no; cin >> no; if(no == s + 1){ high = s; ///overlap } else{ low = s; ///i is diff from 0...s } } answer[i] = high; } else{ answer[i] = unique.size(); unique.push_back(i); } } cout << "0 "; for(int i = 1;i <= n;i++){ cout << answer[i] << " "; } return 0; }

carnival.cpp: In function 'int main()':
carnival.cpp:18:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(no == unique.size()){
      ~~~^~~~~~~~~~~~~~~~