Submission #1200449

#	Time	Username	Problem	Language	Result	Execution time	Memory
1200449		tamzid	Combo (IOI18_combo)	C++20	0 / 100	19 ms	408 KiB

combo

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

int best = 0;
string ans;
vector<char> ch{'A','B','X','Y'};

void backtrack(string p,int n,int i)
{
    if(p.size() == 4 * n + 1)
    {
        return;
    }
    else
    {
      int a = press(p);
        if(a > best)
        {
            ans = p;
            best = a;
        }
        for(int j=0;j<4;++j)
        {
            if(i != j)
            {
              backtrack(p + ch[i], n, i);
            }
        }
    }
}

string guess_sequence(int N) {
  string p = "";
  vector<bool> vis(4,0);
  for(int i=0;i<4;++i)
  {
      p[0] = ch[i];
      backtrack(p,N,i);
  }
  return ans;
}

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