Submission #306078

#	Time	Username	Problem	Language	Result	Execution time	Memory
306078		stoyan_malinin	Combo (IOI18_combo)	C++14	30 / 100	67 ms	548 KiB

combo

#include "combo.h"
//#include "grader.cpp"

using namespace std;

string guess_sequence(int N)
{
    string ans = "";

    if(press("AB")>0)
    {
        if(press("A")>0) ans += "A";
        else ans += "B";
    }
    else
    {
        if(press("X")>0) ans += "X";
        else ans += "Y";
    }

    for(int i = 1;i<N;i++)
    {
        if(press(ans+"A"+ans+"B")>ans.size())
        {
            if(press(ans+"A")>ans.size()) ans += "A";
            else ans += "B";
        }
        else
        {
            if(press(ans+"X")>ans.size()) ans += "X";
            else ans += "Y";
        }
    }

    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:23:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         if(press(ans+"A"+ans+"B")>ans.size())
      |            ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
combo.cpp:25:30: 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(press(ans+"A")>ans.size()) ans += "A";
      |                ~~~~~~~~~~~~~~^~~~~~~~~~~
combo.cpp:30:30: 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(press(ans+"X")>ans.size()) ans += "X";
      |                ~~~~~~~~~~~~~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95