Submission #1007412

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007412		teesla	Combo (IOI18_combo)	C++14	0 / 100	0 ms	356 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;

string guess_sequence(int N) {
  
  vector<char> possivel;

  string res = "";

  string s = "AB";

  int cont = press(s);
  if(cont > 1){
    if(press("A") == 1){
      res += 'A'; possivel = {'B', 'X', 'Y'};
    }
    else {res += 'B'; possivel = {'A', 'X', 'Y'};}
  }
  else{
    if(press("X")==1){res += 'X';possivel = {'B', 'A', 'Y'};}
    else{res += 'Y'; possivel = {'B', 'X', 'A'};}
  }

  for(int i=1; i<N-1; i++){
    string pref ="";
    for(auto j: possivel){
      pref += res;
      pref += possivel[0];
      pref += j;
    }
    pref += res;
    pref += possivel[1];
    cont = press(pref);
    if(cont == i+1) res += possivel[1];
    else if(cont == i+2) res+= possivel[0];
    else res += possivel[2];
  }
  cont = press(res + possivel[0]);
  if(cont == N){
    res += possivel[0];
    return res;
  }
  cont= press(res + possivel[1]);
  if(cont == N){
    res += possivel[1];
    return res;
  }
  res += possivel[2];
  return res;
}

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