Submission #1263461

#	Time	Username	Problem	Language	Result	Execution time	Memory
1263461		piolk	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

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

vector<char> buttons={'A','B','X','Y'};

string guess_sequence(int N){
    string soFar;
    for (int i=0;i<4;i++){
        string b=string(1,buttons[i]);
        if (press(b)==1){
            soFar=b;
            break;
        }
    }

    while (soFar.size()<N){
        for (int i=0;i<4;i++){
            if (buttons[i]==soFar[0]) continue;

            if (press(soFar+buttons[i])>soFar.size()){
                soFar.push_back(buttons[i]);
                break;
            }
        }
    }
    return soFar;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:10:13: error: 'press' was not declared in this scope
   10 |         if (press(b)==1){
      |             ^~~~~
combo.cpp:20:17: error: 'press' was not declared in this scope
   20 |             if (press(soFar+buttons[i])>soFar.size()){
      |                 ^~~~~