Submission #1216036

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216036		gabyferaq	Combo (IOI18_combo)	C++20	5 / 100	0 ms	408 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
string guess_sequence(int N) {
  string p = "";
  if(press("AB"))
  {
    if(press("A")) p+="A";
    else p+="B";
  }
  else {
    if(press("X")) p+="X";
    else p+="Y";
  }
  vector <string> aux;
  if(p=="A") aux={"B","XB","XX","XY"};
  if(p=="B") aux={"A","XA","XX","XY"};
  if(p=="X") aux={"A","BA","BB","BY"};
  if(p=="Y") aux={"A","BA","BB","BX"};
  for (int i=1;i<N-1;i++)
  {
    int r=p.size();
    int val=press(p+aux[0]+p+aux[1]+p+aux[2]+p+aux[3]);
    if(p[0]=='A')
    {
        if(val==r) p+="Y";
        if(val==r+1) p+="B";
        if(val==r+2) p+="X";
    }
    if(p[0]=='B')
    {
        if(val==r) p+="Y";
        if(val==r+1) p+="A";
        if(val==r+2) p+="X";
    }
    if(p[0]=='X')
    {
        if(val==r) p+="Y";
        if(val==r+1) p+="A";
        if(val==r+2) p+="B";
    }
    if(p[0]=='Y')
    {
        if(val==r) p+="X";
        if(val==r+1) p+="A";
        if(val==r+2) p+="B";
    }
  }
  if(press(p+"A"+p+"B")==N)
  {
    if(press(p+"A")==N) p+="A";
    else p+="B";
  }
  else {
    if(press(p+"X")==N) p+="X";
    else p+="Y";
  }
  return p;
}

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