Submission #916937

#	Time	Username	Problem	Language	Result	Execution time	Memory
916937		manishjha91	Combo (IOI18_combo)	C++17	100 / 100	17 ms	2024 KiB

combo

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

std::string guess_sequence(int N){
	using namespace std;
	string v = "ABXY";
	string s = "";
	int f = -1;
	
		
	string curr = ""+string(1,v[0]) + string(1,v[1]);
	if(press(curr))
	{
		if(press(string(1,v[0])))
		{
			f = 0;
		}
		else f = 1;
	}
	else
	{
		if(press(string(1,v[2])))
		{
			f = 2;
		}
		else f = 3;
	}
	
	s.push_back(v[f]);
	swap(v[f],v.back());
	v.pop_back();
	
	if(N==1) return s;
	
	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 = s1 + v[0]+v[0];
		s2 = s2 + v[0]+v[1];
		s3 = s3 + v[0]+v[2];
		s4 = 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: 5 / 5
• Subtask 2: 95 / 95