Submission #267130

#	Time	Username	Problem	Language	Result	Execution time	Memory
267130		jairRS	Combo (IOI18_combo)	C++17	10 / 100	67 ms	580 KiB

combo

#include <iostream>
#include "combo.h"
#include <vector>
using namespace std;

vector<string> buttons = {"A", "B", "X", "Y"};

std::string guess_sequence(int N)
{
	string seq, first;
	for (int i = 0; i < 4; i++)
	{
		if (press(buttons[i]))
		{
			seq = buttons[i];
			first = buttons[i];
			buttons.erase(buttons.begin() + i);
			break;
		}
	}

	while (seq.size() != N)
	{
		int test = press(seq + buttons[0] + seq + buttons[1]);
		if (test != seq.size() + 1)
			seq += buttons[2];
		else
		{
			test = press(seq + buttons[0] + seq + buttons[2]);
			if (test != seq.size() + 1)
				seq += buttons[1];
			else
				seq += buttons[0];
		}
	}
	return seq;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:22:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   22 |  while (seq.size() != N)
      |         ~~~~~~~~~~~^~~~
combo.cpp:25:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   if (test != seq.size() + 1)
      |       ~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:30:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |    if (test != seq.size() + 1)
      |        ~~~~~^~~~~~~~~~~~~~~~~

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