Submission #1206039

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206039		isamatdin	Combo (IOI18_combo)	C++20	30 / 100	10 ms	456 KiB

combo

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

using namespace std;

string guess_sequence(int n)
{
  string p;
  string x;
  if (press("A"))
    x = "BXY", p = "A";
  else if (press("B"))
    x = "AXY", p = "B";
  else if (press("X"))
    x = "ABY", p = "X";
  else
    x = "ABX", p = "Y";
  for (int i = 2; i <= n; i++)
  {
    p += x[0];
    for (int k = 1; k < 3; k++)
    {
      if (press(p) == i)
        break;
      p.back() = x[k];
    }
  }
  return p;
}

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95