Submission #1144082

#	Time	Username	Problem	Language	Result	Execution time	Memory
1144082		Johan	Combo (IOI18_combo)	C++20	30 / 100	10 ms	460 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
 
string guess_sequence(int n){
  string s = "";
  char chk = 'w';
  vector < char > cur{'A', 'B', 'X', 'Y'};
  for(int i = 1; i <= n; i++){
    int cnt = 0;
    string sc;
    for(auto in : cur){
      if(in == chk) continue;
      sc = s; sc += in;
      cnt++;
      if(cnt == 3 && chk != 'w')  break;
      if(cnt == 4 && chk == 'w')  break;
      if(press(sc) == s.size() + 1)  break;
    }
    if(i == 1)  chk = sc[0];  
    s = sc;
  }
  return s;
}

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95