Submission #256854

#	Time	Username	Problem	Language	Result	Execution time	Memory
256854		lani1akea	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

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

using namespace std;

string guess_sequence(int N) {
	int x;
  string s;
  char ch[] = {'A', 'B', 'X', 'Y'};
  if (press("AB")) x = press("A") != 1;
  else x = 2 + (press("X") < 1);
  s += ch[x];
  swap(ch[x], ch[3]);
  for (int i = 1; i < N - 1; ++i) {
    x = press(s + ch[0] + ch[0] + s + ch[0] + ch[1] + s + ch[0] + ch[2] + s + c[2]);
    if (x == i + 2) s += ch[0];
    else if (x == i + 1) s += ch[2];
    else s += ch[1];
  }
  if (press(s + ch[0] + s + ch[1]) == N) {
    if (press(s + ch[0]) == N) s + ch[0];
    else s += ch[1];
  } else s += ch[2];

  return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:15:79: error: 'c' was not declared in this scope
   15 |     x = press(s + ch[0] + ch[0] + s + ch[0] + ch[1] + s + ch[0] + ch[2] + s + c[2]);
      |                                                                               ^