Submission #1307355

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307355		KickingKun	Chameleon's Love (JOI20_chameleon)	C++20	4 / 100	13 ms	460 KiB

chameleon

#include "chameleon.h"
#include <bits/stdc++.h>

using namespace std;

namespace {

int variable_example = 1;

}  // namespace

void Solve(int N) {
  vector <int> ve(2 * N);
  iota(ve.begin(), ve.end(), 1);

  for (int times = 0; times < N; times++) {
    int low = 1, high = ve.size() - 1, posL = -1, posR = -1;
    while (low <= high) {
      int mid = (low + high) >> 1;
      vector <int> ask(ve.begin(), ve.begin() + mid + 1);
      if (Query(ask) < ask.size())
        high = (posR = mid) - 1;
      else low = mid + 1;
    }

    low = 0, high = posR - 1;
    while (low <= high) {
      int mid = (low + high) >> 1;
      vector <int> ask(ve.begin() + mid, ve.begin() + posR + 1);
      if (Query(ask) < ask.size())
        low = (posL = mid) + 1;
      else high = mid - 1;
    }

    Answer(ve[posL], ve[posR]);
    ve.erase(ve.begin() + posR);
    ve.erase(ve.begin() + posL);
  }
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36