Submission #698903

#	Time	Username	Problem	Language	Result	Execution time	Memory
698903		taher	Carnival (CEOI14_carnival)	C++17	100 / 100	24 ms	312 KiB

carnival

#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

  auto Ask = [&](int low, int high) {
    cout << high - low + 1 << " ";
    for (int i = low; i <= high; i++) {
      cout << i + 1 << " \n"[i == high];
    }
    cout.flush();
    int ret;
    cin >> ret;
    return ret;
  };

  int cnt = 1;
  int n;
  cin >> n;
  vector<int> color(n);
  for (int i = 0; i < n; i++) {
    int low = 0, high = i - 1;
    while (low <= high) {
      int mid = low + (high - low) / 2;
      if (Ask(mid, i - 1) + 1 == Ask(mid, i)) {
        high = mid - 1;
      } else {
        low = mid + 1;
      }
    }
    int pos = low - 1;
    if (pos < 0) {
      color[i] = cnt++;
    } else {
      color[i] = color[pos];
    }
  }
  cout << 0 << " ";
  for (int i = 0; i < n; i++) {
    cout << color[i] << " \n"[i == n - 1];
  }
  cout.flush();
  return 0;
}

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