제출 #785758

#제출 시각아이디문제언어결과실행 시간메모리
785758Boas콤보 (IOI18_combo)C++17
10 / 100
43 ms580 KiB
#include "combo.h"

#include <bits/stdc++.h>
#define ALL(x) x.begin(), x.end()
using namespace std;

string guess_sequence(int N)
{
  vector<char> buttons = {'A', 'B', 'X', 'Y'};
  string S;
  std::random_device rd;
  std::mt19937 g(rd());
  for (int i = 0; i < N; i++)
  {
    shuffle(buttons.begin(), buttons.end(), g);
    for (char c : buttons)
    {
      string p = S + c;
      if (press(p) == i + 1)
      {
        S = p;
        if (i == 0)
          buttons.erase(find(ALL(buttons), c));
        break;
      }
    }
  }
  return S;
}
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