Submission #570640

#	Time	Username	Problem	Language	Result	Execution time	Memory
570640		kkkkkkkk	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <iostream>

using namespace std;

string guess_sequence(int N)
{
    string rez;
    char prva;
    if (press("AB"))
    {
        if (press("A"))
            rez="A",prva='A';
        else
            rez="B",prva='B';
    }
    else
    {
        if (press("X"))
            rez="X",prva='X';
        else
            rez="Y",prva='Y';
    }
    for (int i=1;i<N;i++)
    {
        if (prva=='A')
        {
            if (press(rez+"B")==rez.size()+1)
                rez+="B";
            else if (press(rez+"X")==rez.size()+1)
                rez+="X";
            else
                rez+="Y";
        }
        else if (prva=='B')
        {
            if (press(rez+"A")==rez.size()+1)
                rez+="A";
            else if (press(rez+"X")==rez.size()+1)
                rez+="X";
            else
                rez+="Y";
        }
        else if (prva=='X')
        {
            if (press(rez+"A")==rez.size()+1)
                rez+="A";
            else if (press(rez+"B")==rez.size()+1)
                rez+="B";
            else
                rez+="Y";
        }
        else
        {
            if (press(rez+"A")==rez.size()+1)
                rez+="A";
            else if (press(rez+"B")==rez.size()+1)
                rez+="B";
            else
                rez+="X";
        }
    }
    return rez;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:10:9: error: 'press' was not declared in this scope
   10 |     if (press("AB"))
      |         ^~~~~
combo.cpp:28:17: error: 'press' was not declared in this scope
   28 |             if (press(rez+"B")==rez.size()+1)
      |                 ^~~~~
combo.cpp:37:17: error: 'press' was not declared in this scope
   37 |             if (press(rez+"A")==rez.size()+1)
      |                 ^~~~~
combo.cpp:46:17: error: 'press' was not declared in this scope
   46 |             if (press(rez+"A")==rez.size()+1)
      |                 ^~~~~
combo.cpp:55:17: error: 'press' was not declared in this scope
   55 |             if (press(rez+"A")==rez.size()+1)
      |                 ^~~~~