Submission #866693

#	Time	Username	Problem	Language	Result	Execution time	Memory
866693		vjudge1	콤보 (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include<iostream>
#include<string>
#include<vector>
using namespace std;

// int press(string s){
//     return 1;
// }

string guess_sequence(int n){
    vector<char>buttons = {'A','B','X','Y'};
    char starting_char = '0';
    if(press("AB")){
        if(press("A"))
            starting_char = 'A';
        else
            starting_char = 'B';
    }
    else{
        if(press("X"))
            starting_char = 'X';
        else
            starting_char = 'Y';
    }
    string ans{starting_char};
    buttons.erase(find(buttons.begin(), buttons.end(), starting_char));

    // s + B + s + XY + s + XB + s + XX -> if starting_char == A
    for(int i = 2; i < n; ++i){
        int current_coins = press(ans + string{buttons[0]} + ans + string{buttons[1],buttons[2]} + ans
                                   + string{buttons[1], buttons[1]} + ans + string{buttons[1], buttons[1]});
        if(current_coins == i)
            ans.push_back(buttons[2]);
        else if(current_coins == i + 1)
            ans.push_back(buttons[0]);
        else if(current_coins == i + 2)
            ans.push_back(buttons[1]);
    }

    if(press(ans + string{buttons[0], buttons[1]}) == n){
        if(press(ans + string{buttons[0]}) == n)
            ans.push_back(buttons[0]);
        else
            ans.push_back(buttons[1]);

    }
    else{
        ans.push_back(buttons[2]);
    }
    return ans;


}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:13:8: error: 'press' was not declared in this scope
   13 |     if(press("AB")){
      |        ^~~~~
combo.cpp:26:69: error: no matching function for call to 'find(std::vector<char>::iterator, std::vector<char>::iterator, char&)'
   26 |     buttons.erase(find(buttons.begin(), buttons.end(), starting_char));
      |                                                                     ^
In file included from /usr/include/c++/10/bits/locale_facets.h:48,
                 from /usr/include/c++/10/bits/basic_ios.h:37,
                 from /usr/include/c++/10/ios:44,
                 from /usr/include/c++/10/ostream:38,
                 from /usr/include/c++/10/iostream:39,
                 from combo.cpp:1:
/usr/include/c++/10/bits/streambuf_iterator.h:422:5: note: candidate: 'template<class _CharT2> typename __gnu_cxx::__enable_if<std::__is_char<_CharT2>::__value, std::istreambuf_iterator<_CharT> >::__type std::find(std::istreambuf_iterator<_CharT>, std::istreambuf_iterator<_CharT>, const _CharT2&)'
  422 |     find(istreambuf_iterator<_CharT> __first,
      |     ^~~~
/usr/include/c++/10/bits/streambuf_iterator.h:422:5: note:   template argument deduction/substitution failed:
combo.cpp:26:69: note:   '__gnu_cxx::__normal_iterator<char*, std::vector<char> >' is not derived from 'std::istreambuf_iterator<_CharT>'
   26 |     buttons.erase(find(buttons.begin(), buttons.end(), starting_char));
      |                                                                     ^
combo.cpp:30:29: error: 'press' was not declared in this scope
   30 |         int current_coins = press(ans + string{buttons[0]} + ans + string{buttons[1],buttons[2]} + ans
      |                             ^~~~~
combo.cpp:40:8: error: 'press' was not declared in this scope
   40 |     if(press(ans + string{buttons[0], buttons[1]}) == n){
      |        ^~~~~