Submission #348559

#	Time	Username	Problem	Language	Result	Execution time	Memory
348559		Halogen	Combo (IOI18_combo)	C++14	5 / 100	1 ms	212 KiB

combo

#include "combo.h"
std::string guess_sequence(int N) {
  char lst[4] = {'A', 'B', 'X', 'Y'};
  std::string p = "";

  if (press(lst[0] + p + lst[1]) >= 1) {
    if (press(p + lst[0]) == 1){
      p += lst[0];
      lst[0] = lst[3];
    }
    else {
      p += lst[1];
      lst[1] = lst[3];
    }
  }
  else if (press(p + lst[2]) == 1) {
    p += lst[2];
    lst[2] = lst[3];
  }
  else {
    p += lst[3];
  }

  for (int j = 2; j < N; j++) {
    int result = press(p + lst[0] + p + lst[1] + lst[0] + p + lst[1] + lst[1] + p + lst[1] + lst[2]);

    if (result == j) p += lst[0];
    else if (result == j + 1) p += lst[1];
    else p += lst[2];
  }

  if (press(p + lst[2]) == N) p += lst[2];
  else if (press(p + lst[0]) == N) p += lst[0];
  else p += lst[1];

  return p;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95