Submission #235635

#	Time	Username	Problem	Language	Result	Execution time	Memory
235635		dannber_BR	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

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

using namespace std;

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

string guess_sequence(int N) {
  string Btns[] = {"A","B","X","Y"};
  string s = "";
  int p = 0;

  if (press(Btns[0]) == 1) {
    s += Btns[0];
    p = 0;
    for(int i = 0;i < 4;i++)
    {
      if (i != p)
      {
        if (press(s + Btns[i]) == 2) s += Btns[i];
      }
    }
  }
  else if (press(Btns[1]) == 1) {
    s += Btns[1];
    p = 1;
    for(int i = 0;i < 4;i++)
    {
      if (i != p)
      {
        if (press(s + Btns[i]) == 2) s += Btns[i];
      }
    }
  }
  else if (press(Btns[2]) == 1){
    s += Btns[2];
    p = 2;
    for(int i = 0;i < 4;i++)
    {
      if (i != p)
      {
        if (press(s + Btns[i]) == 2) s += Btns[i];
      }
    }
  }
  else if (press(Btns[3]) == 1) {
    s += Btns[3];
    p = 3;
    for(int i = 0;i < 4;i++)
    {
      if (i != p)
      {
        if (press(s + Btns[i]) == 2) s += Btns[i];
      }
    }
  }


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

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:65:21: error: 'j' was not declared in this scope
   65 |           s += Btns[j];
      |                     ^