Submission #237418

#	Time	Username	Problem	Language	Result	Execution time	Memory
237418		dannber_BR	Combo (IOI18_combo)	C++14	10 / 100	68 ms	548 KiB

combo

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

using namespace std;

string Btns[] = {"A","B","X","Y"};

string guess_sequence(int N) {
  string s = "";
  int p = 0;
  int long_gues = 0;

  if (press(Btns[0]) == 1) {
    s += Btns[0];
    p = 0;
    long_gues++;
  }
  else if (press(Btns[1]) == 1) {
    s += Btns[1];
    p = 1;
    long_gues++;
  }
  else if (press(Btns[2]) == 1){
    s += Btns[2];
    p = 2;
    long_gues++;
  }
  else if (press(Btns[3]) == 1) {
    s += Btns[3];
    p = 3;
    long_gues++;
  }

  if (N == 1)
  {
    return s;
  }

  if (press(s + Btns[0]) == 2) {
    s += Btns[0];
    long_gues++;
  }
  else if (press(s+Btns[1]) == 2) {
    s += Btns[1];
    long_gues++;
  }
  else if (press(s+Btns[2]) == 2){
    s += Btns[2];
    long_gues++;
  }
  else if (press(s+Btns[3]) == 2) {
    s += Btns[3];
    long_gues++;
  }

  if (N == 2) return s;

  if (press(s + Btns[0]) == 3) {
    s += Btns[0];
    long_gues++;
  }
  else if (press(s+Btns[1]) == 3) {
    s += Btns[1];
    long_gues++;
  }
  else if (press(s+Btns[2]) == 3){
    s += Btns[2];
    long_gues++;
  }
  else if (press(s+Btns[3]) == 3) {
    s += Btns[3];
    long_gues++;
  }
  if (N == 3) return s;
  
  int last_one = 0;
  for(int i = long_gues + 1;i <= N;)
  {
    bool fact = false;
    if (press(s + Btns[last_one]) == i)
    {
          s += Btns[last_one];
          fact = true;
          long_gues++;
          i++;
    }
    else if (fact == false)
    {
      for(int j = 0;j <= 3;j++)
      {
        if(j != p && !fact) 
        {
          if (press(s + Btns[j]) == i)
          {
            s += Btns[j];
            fact = true;
            last_one = j;
            i++;
          }
        }
      }
    }
  }
  return s;
}

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