이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#include "combo.h"
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define p_b push_back
#define pll pair<ll,ll>
#define pii pair<int,int>
#define m_p make_pair
#define all(x) x.begin(),x.end()
#define sset ordered_set
#define sqr(x) (x)*(x)
#define pw(x) (1ll << x)
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
const ll MAXN = 1123456;
const ll N = 1e6;
const ll mod = 1e9 + 7;
mt19937_64 rnd(chrono::system_clock::now().time_since_epoch().count());
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T> void vout(T s){cout << s << endl;exit(0);}
string guess_sequence(int N){
string ans;
string t = "AB";
string s1 = "ABXY";
ll val = press(t);
if(val >= 1){
t = "A";
if(val == 2 && N == 2)return "AB";
if(press(t) == 1){
ans += "A";
s1.erase(s1.find('A'), 1);
}else{
ans += "B";
s1.erase(s1.find('B'), 1);
}
}else{
t = "X";
if(press(t) == 1){
ans += "X";
s1.erase(s1.find('X'), 1);
}else{
ans += "Y";
s1.erase(s1.find('Y'), 1);
}
}
for(int i = 2; i < N; i++){
string mb;
mb = ans + s1[0] + ans + s1[1] + s1[0] + ans + s1[1] + s1[1] + ans + s1[1] + s1[2];
ll val = press(mb);
if(val == i)ans += s1[0];
else if(val == i + 1)ans += s1[1];
else ans += s1[2];
}
if(N == 1)return ans;
random_shuffle(s1.begin(), s1.end());
if(press(ans + s1[0]) == N)ans += s1[0];
else if(press(ans + s1[1]) == N)ans += s1[1];
else ans += s1[2];
return ans;
}
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