제출 #336922

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
336922		blue	콤보 (IOI18_combo)	C++11	컴파일 에러	0 ms	0 KiB

combo

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

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

    return res;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:25:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |     while(res.size() != N-1)
      |           ~~~~~~~~~~~^~~~~~
combo.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |         if(query_res == res.size())
      |            ~~~~~~~~~~^~~~~~~~~~~~~
combo.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         else if(query_res == res.size() + 1)
      |                 ~~~~~~~~~~^~~~~~~~~~~~~~~~~
combo.cpp:49:42: error: 'pos' was not declared in this scope
   49 |     if(press(res + C[0] + res + C[1]) == pos)
      |                                          ^~~