제출 #144247

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
144247		josiftepe	콤보 (IOI18_combo)	C++14	0 / 100	2 ms	200 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;

std::string guess_sequence(int N) {
    vector<char> seq={'A','B','X','Y'};
    string s = "";
    int ab=press("AB");
    if(ab==1)
    {
        int aa=press("A");
        if(aa==1)
        {
            s+='A';
        }
        else
        {
            s+='B';
        }
    }
    else
    {
        int xx=press("X");
        if(xx==1)
        {
            s+='X';
        }
        else
        {
            s+='Y';
        }
    }
    if(s[0] == 'A'){
        seq.erase(seq.begin());
    }
    else if(s[0] == 'B'){
        seq.erase(seq.begin() + 1);
    }
    else if(s[0] == 'X'){
        seq.erase(seq.begin() + 2);
    }
    else{
        seq.erase(seq.begin() + 3);
    }
    while((int)s.size()<N)
    {
        string prv=s+seq[0];
        string vtor=s+seq[1]+seq[2];
        string tret=s+seq[1]+seq[1];
        string cet=s+seq[1]+seq[0];
        string tmp = "";
        tmp += prv;
        tmp += vtor;
        tmp += tret;
        tmp += cet;
        int nxt=press(tmp);
        if(nxt==1+s.size())s+=seq[0];
        else if(nxt==2+s.size())s+=seq[1];
        else s+=seq[2];
    }
    return s;
}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:57:15: 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(nxt==1+s.size())s+=seq[0];
      |            ~~~^~~~~~~~~~~~
combo.cpp:58:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         else if(nxt==2+s.size())s+=seq[1];
      |                 ~~~^~~~~~~~~~~~

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