Submission #674004

#	Time	Username	Problem	Language	Result	Execution time	Memory
674004		peijar	Super Dango Maker (JOI22_dango3)	C++17	22 / 100	768 ms	588 KiB

dango3

#include "dango3.h"
#include <bits/stdc++.h>
using namespace std;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int randint(int lb, int ub) {
  return uniform_int_distribution<int>(lb, ub)(rng);
}

void Solve(int nbCouleurs, int parCouleur) {
  vector<vector<int>> sol(parCouleur);
  vector<int> bef;
  int tot = nbCouleurs * parCouleur;
  vector<bool> killed(tot);

  for (int iCouleur = 0; iCouleur < nbCouleurs; ++iCouleur) {
    vector<int> indicesRestants;
    for (int i = 0; i < tot; ++i)
      if (!killed[i])
        indicesRestants.push_back(i);
    shuffle(indicesRestants.begin(), indicesRestants.end(), rng);
    int lo = 0, up = indicesRestants.size() - 1;

    while (lo < up) {
      int mid = (lo + up) / 2;
      vector<int> toQuery = bef;
      for (int i = 0; i <= mid; ++i)
        toQuery.push_back(indicesRestants[i] + 1);
      if (Query(toQuery) >= 1)
        up = mid;
      else
        lo = mid + 1;
    }
    vector<int> almostAll = bef;
    for (int i = 0; i < lo; ++i)
      almostAll.push_back(indicesRestants[i] + 1);
    int prv = lo;
    killed[indicesRestants[prv]] = true;
    sol[0].push_back(indicesRestants[prv] + 1);
    for (int iEl = 1; iEl < parCouleur; ++iEl) {
      lo = prv + 1, up = (int)indicesRestants.size() - 1;
      while (lo < up) {
        int mid = (lo + up) / 2;
        vector<int> toQuery = almostAll;
        for (int i = prv + 1; i <= mid; ++i)
          toQuery.push_back(indicesRestants[i] + 1);
        if (Query(toQuery) >= 1)
          up = mid;
        else
          lo = mid + 1;
      }
      killed[indicesRestants[lo]] = true;
      sol[iEl].push_back(indicesRestants[lo] + 1);
      prv = lo;
    }
    bef.push_back(indicesRestants[prv] + 1);
  }
  for (auto &s : sol)
    Answer(s);
}

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 15 / 15
• Subtask 4: 0 / 78