Submission #211537

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
211537	2020-03-20 16:58:11	Harry464	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

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#include <iostream>
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];
 
 
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Compilation message (stderr)

combo.cpp:3:1: error: 'string' does not name a type; did you mean 'stdin'?
    3 | string guess_sequence(int N) {
      | ^~~~~~
      | stdin