Submission #532273

#	Time	Username	Problem	Language	Result	Execution time	Memory
532273		devariaota	Carnival (CEOI14_carnival)	C++17	0 / 100	9 ms	200 KiB

carnival

#include <bits/stdc++.h>
using namespace std;

int main(){
  cin.tie(0) -> ios_base::sync_with_stdio(0);

  int n;
  cin >> n;
  vector<int> a(n + 1), q(n + 1);
  auto ask = [&](int l, int r) -> int {
    cout << r - l + 1 << " ";
    for(int i=l;i<=r;i++)
    {
      cout << i << " ";
    }
    cout << endl;
    int ret;
    cin >> ret;
    return ret;
  };
  auto ask2 = [&](int l, int r, int x) -> int{
    cout << r - l + 2 << " ";
    for(int i=l;i<=r;i++)
    {
      cout << q[i] << " ";
    }
    cout << x << endl;
    int ret;
    cin >> ret;
    return ret;
  };
  for(int i=1,cur=0;i<=n;i++)
  {
    // cout << ":: " << i << " " << cur << endl;
    // cout << "! ";
    // for(int i=1;i<=cur;i++)
    // {
    //   cout << q[i] << " ";
    // }
    // cout << endl;
    int t = ask(1, i);
    if(t > cur)
    {
      cur++;
      q[cur] = i;
      a[i] = cur;
    }
    else
    {
      int l = 1, r = cur;
      while(l <= r){
        // cout << "-> " << l << " " << r << endl;
        int mid = (l + r) / 2;
        int z = ask2(l, mid, i);
        if(z == mid - l + 2)
        {
          l = mid + 1;
        }
        else
        {
          r = mid - 1;
        }
      }
      a[i] = q[l];
    }
  }  
  cout << "0 ";
  for(int i=1;i<=n;i++)
  {
    cout << a[i] << " ";
  }
  cout << endl;
  
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20