제출 #417879

#제출 시각아이디문제언어결과실행 시간메모리
417879LouayFarah콤보 (IOI18_combo)C++14
5 / 100
16 ms200 KiB
#include "bits/stdc++.h"
#include "combo.h"
using namespace std;
 
#define pb push_back

int press(string p);

string guess_sequence(int n)
{
    string res = "";
    string temp = "ABXY";
    for(int i = 0; i<3; i++)
    {
        string tr = "";
        tr.pb(temp[i]);
        if(press(tr)==1)
        {
            res.pb(temp[i]);
            break;
        }
    }
    if(res.length()==0)
        res.pb('Y');

    string used = "";
    for(int i = 0; i<4; i++)
    {
        if(res[0]==temp[i])
            continue;
        used.pb(temp[i]);
    }

    for(int i = 2; i<n; i++)
    {
        string s = "";
        s = s + res[0] + used[0];
        s = s + res[0] + used[1] + used[0];
        s = s + res[0] + used[1] + used[1];
        s = s + res[0] + used[1] + used[2];

        int k = press(s);
        if(k==(int)res.length())
            res.pb(used[2]);
        if(k==(int)res.length() + 1)
            res.pb(used[0]);
        if(k==(int)res.length()+2)
            res.pb(used[1]);
    }

    if(res.length()!=n)
    {
        string t = res + used[0];
        if(press(t)==n)
        {
            res = res + used[0];
            return res;
        }
        t = res + used[1];
        if(press(t)==n)
        {
            res = res + used[1];
            return res;
        }

        res = res + used[2];
        return res;
    }
    return res;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:51:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   51 |     if(res.length()!=n)
      |        ~~~~~~~~~~~~^~~
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