This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
//
// main.cpp
//
// Created by Panagiotis Chadjicostas on
// Copyright © Panagiotis Hadjicostas. All rights reserved.
//
#include "combo.h"
#include <iostream>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <limits>
#include <list>
#include <cstring>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <unordered_map>
using namespace std;
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
#define fo(i,a,b) for(int i = a; i<=b; i++)
#define f(i,b) for(int i=0;i<b;i++)
#define F first
#define S second
#define sz size
#define ls s,m,idx<<1
#define rs m+1,e,idx<<1|1
const ll MOD=ll(1e9)+7;
const ll MAXN=2*ll(1e6);
void checker(){
ll n=rand()%20+2;
vi a(n,ll());
for(ll i=0;i<n;i++){
a[i]=rand()%20+2;
}
for(ll b=0;b<(1<<n);b++){
vi on,off;
for(ll i=0;i<n;i++){
if(i&(1<<i)){
on.push_back(i);
}
else{
off.push_back(i);
}
}
}
}
///////////////////////////////////////////////////////////////////////
int press(string s);
string guess_sequence(int N){
char ch[4]={'A','B','X','Y'};
// gia na vro to arxiko
ll idx=3;
if(press("AB"))idx = (press("A")==1)^1;
else (idx = 2 + (press("Y")));
swap(ch[0],ch[idx]);
string s="";
s+=ch[0];
// meta
if(N==1)return s;
for(ll i=2;i<=N-1;i++){
string temp= s;
temp+=ch[1];
temp+=s;
temp+=ch[2];
temp+=ch[1];
temp+=s;
temp+=ch[2];
temp+=ch[2];
temp+=s;
temp+=ch[2];
temp+=ch[3];
ll ans=press(temp);
if(ans==s.size()){
s+=ch[3];
}
else if(ans==s.size()+2){
s+=ch[2];
}
else
s+=ch[1];
}
for(ll i=0;i<=3;i++){
string temp=s;
temp+=ch[i];
if(press(temp)==N)
return temp;
}
//cout<<1/0<<endl;
s+=ch[3];
return s;
}
Compilation message (stderr)
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:92:15: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
92 | if(ans==s.size()){
| ~~~^~~~~~~~~~
combo.cpp:95:20: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
95 | else if(ans==s.size()+2){
| ~~~^~~~~~~~~~~~
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