Submission #211519

#	Time	Username	Problem	Language	Result	Execution time	Memory
211519		Harry464	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <iostream>
#include <string>

using namespace std;

string guess_sequence(int N) {
  char slovo[4]={'A','B','X','Y'};
  int prvoSlovo, odgovor;
  string s;
  
  if(press("AB"))
  {
    if(press("A")) prvoSlovo=0;
    else prvoSlovo=1;
  }
  else
  {
    if(press("X")) prvoSlovo=2;
    else prvoSlovo=3;
  }
  
  s+=slovo[prvoSlovo];
  
  for(int i=2;i<N;i++)
  {
    odgovor=press(s + slovo[(prvoSlovo+1)%4] + slovo[(prvoSlovo+1)%4] +
                  s + slovo[(prvoSlovo+1)%4] + slovo[(prvoSlovo+2)%4] +
                  s + slovo[(prvoSlovo+1)%4] + slovo[(prvoSlovo+3)%4] +
                  s + slovo[(prvoSlovo+2)%4]);
    
    if(odgovor==s.size()) s+=slovo[(prvoSlovo+3)%4];
    else if(odgovor==s.size()+1) s+=slovo[(prvoSlovo+2)%4];
    else s+=slovo[(prvoSlovo+1)%4];
  }
  
  if(press(s+"A"+s+"B")>s.size())
  {
    if(press(s+"A")>s.size()) s+="A";
    else s+="B";
  }
  else
  {
    if(press(s+"X")>s.size()) s+="X";
    else s+="Y";
  }
  
  return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:11:6: error: 'press' was not declared in this scope
   11 |   if(press("AB"))
      |      ^~~~~
combo.cpp:26:13: error: 'press' was not declared in this scope
   26 |     odgovor=press(s + slovo[(prvoSlovo+1)%4] + slovo[(prvoSlovo+1)%4] +
      |             ^~~~~
combo.cpp:31:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     if(odgovor==s.size()) s+=slovo[(prvoSlovo+3)%4];
      |        ~~~~~~~^~~~~~~~~~
combo.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     else if(odgovor==s.size()+1) s+=slovo[(prvoSlovo+2)%4];
      |             ~~~~~~~^~~~~~~~~~~~
combo.cpp:36:6: error: 'press' was not declared in this scope
   36 |   if(press(s+"A"+s+"B")>s.size())
      |      ^~~~~