Submission #226020

#	Time	Username	Problem	Language	Result	Execution time	Memory
226020		Dilshod_Imomov	콤보 (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
using namespace std;

string guess_sequence(int N) {
  string p;
  vector < char > vc = {'A', 'X', 'B', 'Y'};
  if ( press("AB") ) {
    if ( press("A") ) {
      p += 'A';
      vc.erase(vc.begin());
    }
    else {
      p += 'B';
      vc.erase(vc.begin() + 2);
    }
  }  
  else {
    if ( press("X") ) {
      p += 'X';
      vc.erase(vc.begin() + 1);
    }
    else {
      p += 'Y';
      vc.erase(vc.begin() + 2);
    }
  }

  for ( int i = 1; i < N - 1; i++ ) {
    string t;
    t += p + vc[0];
    t += p + vc[1] + vc[0];
    t += p + vc[1] + vc[1];
    t += p + vc[1] + vc[2];
    int sz = p.size(), x = press(t);
    if ( x == sz + 1 ) {
      p += vc[0];
    }
    else if ( x == sz + 2 ) {
      p += vc[1];
    }
    else {
      p += vc[2];
    }
  }
  string t;
  t += p + vc[0];
  t += p + vc[1];
  if ( press(t) == N ) {
    t = p + vc[0];
    if ( press(t) == N ) {
      p += vc[0];
    }
    else {
      p += vc[1];
    }
  } 
  else {
    p += vc[2];
  }
  return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:6:3: error: 'vector' was not declared in this scope
    6 |   vector < char > vc = {'A', 'X', 'B', 'Y'};
      |   ^~~~~~
combo.cpp:2:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    1 | #include "combo.h"
  +++ |+#include <vector>
    2 | using namespace std;
combo.cpp:6:12: error: expected primary-expression before 'char'
    6 |   vector < char > vc = {'A', 'X', 'B', 'Y'};
      |            ^~~~
combo.cpp:10:7: error: 'vc' was not declared in this scope
   10 |       vc.erase(vc.begin());
      |       ^~
combo.cpp:14:7: error: 'vc' was not declared in this scope
   14 |       vc.erase(vc.begin() + 2);
      |       ^~
combo.cpp:20:7: error: 'vc' was not declared in this scope
   20 |       vc.erase(vc.begin() + 1);
      |       ^~
combo.cpp:24:7: error: 'vc' was not declared in this scope
   24 |       vc.erase(vc.begin() + 2);
      |       ^~
combo.cpp:30:14: error: 'vc' was not declared in this scope
   30 |     t += p + vc[0];
      |              ^~
combo.cpp:46:12: error: 'vc' was not declared in this scope
   46 |   t += p + vc[0];
      |            ^~