Submission #203377

#	Time	Username	Problem	Language	Result	Execution time	Memory
203377		0gnjen	Combo (IOI18_combo)	C++14	0 / 100	1 ms	200 KiB

combo

#include "combo.h"

std::string guess_sequence(int N)
{
    std::string s = "";

    int p = press("AB");
    if(p > 0)
    {
        p = press("A");
        if(p == 1)
            s += 'A';
        else
            s += 'B';
    }

    else
    {
        p = press("X");
        if(p == 1)
            s += 'X';
        else
            s += 'B';
    }

    char c1[4], c[3];
    c1[0] = 'A';
    c1[1] = 'B';
    c1[2] = 'X';
    c1[3] = 'Y';

    for(int i = 0, j = 0; i < 4; i++)
    {
        if(c1[i] != s[0])
        {
            c[j] = c1[i];
            j++;
        }
    }

    for(int i = 1; i < N-1; i++)
    {
        p = press(s+s+c[1]+s+c[2]+c[0]+s+c[2]+c[1]+s+c[2]+s[2]);

        if(p == s.size())
        {
            s += c[0];
        }

        if(p == s.size()+1)
        {
            s += c[1];
        }

        if(p == s.size()+2)
        {
            s += c[2];
        }
    }

    p = press(s+c[0]);
    if(p == N)
    {
        s += c[0];
    }

    else
    {
        p = press(s+c[1]);

        if(p == N)
            s += c[1];

        else
            s += c[2];
    }


    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:45:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         if(p == s.size())
      |            ~~^~~~~~~~~~~
combo.cpp:50:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         if(p == s.size()+1)
      |            ~~^~~~~~~~~~~~~
combo.cpp:55:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         if(p == s.size()+2)
      |            ~~^~~~~~~~~~~~~

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