Submission #756380

#	Time	Username	Problem	Language	Result	Execution time	Memory
756380		anaduguleanu	Combo (IOI18_combo)	C++14	100 / 100	36 ms	620 KiB

combo

#include <iostream>
#include <cstring>
#include "combo.h"
using namespace std;
string guess_sequence(int N)
{
    string s, rest;
    if (press("AB") > 0)
    {
        if (press("A") == 1)
        {
            s = "A";
            rest = "BXY";
        }
        else
        {
            s = "B";
            rest = "AXY";
        }
    }
    else
    {
        if (press("X") == 1)
        {
            s = "X";
            rest = "ABY";
        }
        else
        {
            s = "Y";
            rest = "ABX";
        }
    }
    if (N == 1)
        return s;
    while (s.size() < N - 1)
    {
        int length = press(s + rest[0] + s + rest[1] + rest[0] + s + rest[1] + rest[1] + s + rest[1] + rest[2]);
        if (s.size() == length - 1)
            s = s + rest[0];
        else
            if (s.size() == length - 2)
                s = s + rest[1];
            else
                s = s + rest[2];
    }
    if (s.size() != press(s + rest[0]))
        s = s + rest[0];
    else
        if (s.size() != press(s + rest[1]))
            s = s + rest[1];
        else
            s = s + rest[2];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:36:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     while (s.size() < N - 1)
      |            ~~~~~~~~~^~~~~~~
combo.cpp:39:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   39 |         if (s.size() == length - 1)
      |             ~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:42:26: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |             if (s.size() == length - 2)
      |                 ~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:47:18: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   47 |     if (s.size() != press(s + rest[0]))
      |         ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
combo.cpp:50:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |         if (s.size() != press(s + rest[1]))
      |             ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~

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