Submission #916927

#	Time	Username	Problem	Language	Result	Execution time	Memory
916927		manishjha91	Combo (IOI18_combo)	C++17	0 / 100	0 ms	344 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>


std::string guess_sequence(int N){
	using namespace std;
	vector<char> v = {'A','B','X','Y'};
	string s = "";
	int f = -1;
	for(int i=0; i<2; i++)
	{
		if(f!=-1) break;
		string curr = ""+string(1,v[2*i]) + string(1,v[2*i+1]);
		if(press(curr))
		{
			for(int j=0; j<2; j++)
			{
				if(press(string(1,v[2*i+j])))
				{
					f = 2*i + j;
					break;
				}
			}
		}
	}
	s.push_back(v[f]);
	swap(v[f],v.back());
	v.pop_back();
	
	

	for(int i=0; i<N-2; i++)
	{
		int n = s.size();
		string s1 = s;
		string s2 = s;
		string s3 = s;
		string s4 = s;

		s1+=v[0]+v[0];
		s2+=v[0]+v[1];
		s3+=v[0]+v[2];
		s4+=v[1];
		
		string curr = s1 + s2 + s3 + s4;
		
		int cnt = press(curr);
		if(cnt==n+2)
		{
			s.push_back(v[0]);
		}
		else if(cnt==n+1) s.push_back(v[1]);
		else s.push_back(v[2]);
	}
	
	s.push_back(v[0]);
	if(press(s)==N)
	{
		return s;
	}
	s.pop_back();
	s.push_back(v[1]);
	if(press(s)==N)
	{
		return s;
	}
	s.pop_back();
	s.push_back(v[2]);
	return s;
	
	
}

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