This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "combo.h"
#include <string>
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;
string li_1="",li_2="",li_3="";
for (auto i: "ABXY"){
if (i==literka) continue;
if(li_1=="") li_1 = i;
else if (li_2=="") li_2 = i;
else li_3 = i;
}
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("AB")){
if (press("A")){
literka = 'A';
}
else{
literka = 'B';
}
}
else{
if (press("X")){
literka = 'X';
}
else{
literka = 'Y';
}
}
wynik += literka;
}
return wynik;
}
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