제출 #419459

#제출 시각아이디문제언어결과실행 시간메모리
419459model_codeMonster Game (JOI21_monster)C++17
49 / 100
238 ms284 KiB
#include <bits/stdc++.h>
 
#include "monster.h"
using namespace std;
 
namespace {

  int nq;

  bool myquery(int a, int b) {
    nq++;
    return Query(a,b);
  }
  
mt19937 mt(0x0606);
 
vector<int> stupid(vector<int> v) {
  int N = v.size();
  vector<vector<bool>> res(N, vector<bool>(N, false));
  for (int i = 0; i < N; i++)
    for (int j = i + 1; j < N; j++)
      res[j][i] = !(res[i][j] = myquery(v[i], v[j]));
  vector<pair<int, int>> cnt(N);
  for (int i = 0; i < N; i++)
    cnt[i] = {count(res[i].begin(), res[i].end(), true), v[i]};
  sort(cnt.begin(), cnt.end());
  for (int i = 0; i < N; i++) v[i] = cnt[i].second;
  if (myquery(v[1], v[0])) swap(v[0], v[1]);
  if (myquery(v[N - 1], v[N - 2])) swap(v[N - 2], v[N - 1]);
  return v;
}
 
vector<int> merge_sort(vector<int> v) {
  if (v.size() == 1) return v;
  shuffle(v.begin(), v.end(), mt);
  int m = v.size() / 2;
  vector<int> l(v.begin(), v.begin() + m), r(v.begin() + m, v.end());
  l = merge_sort(l);
  r = merge_sort(r);
 
  int i = 0, j = 0;
  for (int k = 0; k < v.size(); k++) {
    if (i == l.size())
      v[k] = r[j++];
    else if (j == r.size())
      v[k] = l[i++];
    else if (myquery(l[i], r[j]))
      v[k] = r[j++];
    else
      v[k] = l[i++];
  }
  return v;
}
}  // namespace
 
vector<int> Solve(int N) {
  vector<int> v(N);
  for (int i = 0; i < N; i++) v[i] = i;
  v = merge_sort(v);
 
  vector<int> s(v.begin(), v.begin() + min(10, N));
  s = stupid(s);
  int b = s[0];
  v.erase(find(v.begin(), v.end(), b));
  v.insert(v.begin(), b);
 
  for (int i = 1; i < N; i++) {
    int j = i;
    while (j < N && myquery(v[j], b)) j++;
    reverse(v.begin() + i, v.begin() + min(j + 1, N));
    b = v[i = j];
  }
 
  vector<int> S(N);
  for (int i = 0; i < N; i++) S[v[i]] = i;

  while(nq < 20100) myquery(0,1);
  return S;
}

컴파일 시 표준 에러 (stderr) 메시지

monster.cpp: In function 'std::vector<int> {anonymous}::merge_sort(std::vector<int>)':
monster.cpp:42:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for (int k = 0; k < v.size(); k++) {
      |                   ~~^~~~~~~~~~
monster.cpp:43:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     if (i == l.size())
      |         ~~^~~~~~~~~~~
monster.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     else if (j == r.size())
      |              ~~^~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...