제출 #336925

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
336925		blue	콤보 (IOI18_combo)	C++11	5 / 100	1 ms	256 KiB

combo

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

/*int press(string S)
{
    cout << S << '\n';
    int res;
    cin >> res;
    return res;
}*/

string guess_sequence(int N)
{
    string res;
    if(press("AB") >= 1)
    {
        res = (press("A") == 1 ? "A" : "B");
    }
    else
    {
        res = (press("X") == 1 ? "X" : "Y");
    }

    string query;
    int query_res;

    vector<string> C;
    for(string t: {"A", "B", "X", "Y"}) if(t != res) C.push_back(t);

    while(res.size() != N-1)
    {
        query.clear();

        query += res + C[0];
        query += res + C[1] + C[0];
        query += res + C[1] + C[1];
        query += res + C[1] + C[2];

        query_res = press(query);
        if(query_res == res.size())
        {
            res += C[2];
        }
        else if(query_res == res.size() + 1)
        {
            res += C[0];
        }
        else
        {
            res += C[1];
        }
    }

    if(press(res + C[0] + res + C[1]) == res.size())
    {
        res += C[2];
    }
    else
    {
        if(press(res + C[0]) == res.size() + 1)
        {
            res += C[0];
        }
        else
        {
            res += C[1];
        }
    }
    return res;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:33:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |     while(res.size() != N-1)
      |           ~~~~~~~~~~~^~~~~~
combo.cpp:43:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         if(query_res == res.size())
      |            ~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:47:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         else if(query_res == res.size() + 1)
      |                 ~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:57:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     if(press(res + C[0] + res + C[1]) == res.size())
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:63:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         if(press(res + C[0]) == res.size() + 1)
      |            ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~

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