Submission #983617

#	Time	Username	Problem	Language	Result	Execution time	Memory
983617		SzymonKrzywda	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

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

string guess_sequence(int N){
    int k;
    char literka;
    string wynik="",query;
    if (press("AB")){
        if (press("A")){
            literka = 'A';
        }
        else{
            literka = 'B';
        }
    }
    else{
        if (press("X")){
            literka = 'X';
        }
        else{
            literka = 'Y';
        }
    }
    wynik += literka;
    //cout << literka << endl;
    
    string li_1="",li_2="",li_3="";
    for (auto i: "ABXY"){
        if (i==literka) continue;
        //cout << li_1 << " " << li_2 << " " << li_3 << " " << i << endl;
        if(li_1=="") li_1 = i;
        else if (li_2=="") li_2 = i;
        else if (li_3=="") li_3 = i;
    }
    cout << li_1 << " " << li_2 << " " << li_3 << endl;
    for (int i=2; i<N; i++){
        query = wynik+li_1+wynik+li_2+li_1+wynik+li_2+li_2+wynik+li_2+li_3;
        k = press(query);
        if (k-i+1 == 1){
            wynik += li_1;
        }
        else if(k-i+1 == 2){
            wynik += li_2;
        }
        else wynik += li_3;
    }
    
    if (N!=1){
        if (press(wynik+"AB")==N){
            if (press(wynik+"A")==N){
                literka = 'A';
            }
            else{
                literka = 'B';
            }
        }
        else{
            if (press(wynik+"X")==N){
                literka = 'X';
            }
            else{
                literka = 'Y';
            }
        }
        wynik += literka;
    }
    
    return wynik;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:36:5: error: 'cout' was not declared in this scope
   36 |     cout << li_1 << " " << li_2 << " " << li_3 << endl;
      |     ^~~~
combo.cpp:3:1: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    2 | #include "combo.h"
  +++ |+#include <iostream>
    3 | using namespace std;
combo.cpp:36:51: error: 'endl' was not declared in this scope
   36 |     cout << li_1 << " " << li_2 << " " << li_3 << endl;
      |                                                   ^~~~
combo.cpp:3:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
    2 | #include "combo.h"
  +++ |+#include <ostream>
    3 | using namespace std;