Submission #788126

#	Time	Username	Problem	Language	Result	Execution time	Memory
788126		APROHACK	Combo (IOI18_combo)	C++17	30 / 100	37 ms	456 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
#define ll long long
#define ff first
#define ss second
#define pb push_back
using namespace std;




std::string guess_sequence(int N) {
  string p = "";
  string posi = "ABXY";
  string ans = "";
  char comienza;
  string newPosi = "";
  int best = 0, res = 0;
  for(int j = 0 ; j < 3 ; j ++){
	  p = ans;
	  p+= posi[j];
	  int coin = press(p);
	  if(coin > res){
		  res = coin;
		  best = j;
	  }
  }
  if(res == 0)best = 3;
  ans += posi[best];
  for(auto i : posi)if(i != posi[best])newPosi += i;
  //for (auto i : newPosi)cout << i << endl;
  for(int i = 1 ; i < N ; i ++){
	  best = 0, res = 0;
	  for(int j = 0 ; j < 2 ; j ++){
		  p = ans;
		  p+= newPosi[j];
		  int coin = press(p);
		  if(coin > res){
			  res = coin;
			  best = j;
			  if(res == i + 1)break;
		  }
	  }
	  if(res != i + 1){
		  best = 2;
	  }
	  ans += newPosi[best];
  }
  //cout << ans << endl;
  return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:16:8: warning: unused variable 'comienza' [-Wunused-variable]
   16 |   char comienza;
      |        ^~~~~~~~

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