이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;
const int MAXN=86005;
int lo[MAXN],hi[MAXN],arr[MAXN],res[MAXN];
vector<int> mid[MAXN];
int tengah(int x,int y){
return (3*x+2*y)/5;
}
void Solve(int N) {
int prev=0,tmpL=1,tmpR=N+1,nxt;
vector<int> v;
for(int i=1;i<=2*N;i++)v.push_back(i);
random_shuffle(v.begin(),v.end());
for(auto i : v){
if(Query(i)==prev){
arr[tmpR]=i;
tmpR++;
}
else{
arr[tmpL]=i;
tmpL++;
prev++;
}
}
for(int i=N+1;i<=2*N;i++){
lo[i]=1;
hi[i]=N;
mid[tengah(lo[i],hi[i])].push_back(i);
}
int sudah=0,prefix=0;
while(sudah<N){
for(int i=1;i<=N;i++){
prev=Query(arr[i]);
while(!mid[i].empty()){
int now=mid[i].back();
mid[i].pop_back();
nxt=Query(arr[now]);
if(prefix){
if(nxt==prev){ //sudah ada
hi[now]=i-1;
res[now]=i;
if(lo[now]<=hi[now])mid[tengah(lo[now],hi[now])].push_back(now);
else{
sudah++;
Answer(arr[now],arr[res[now]]);
}
}
else{
lo[now]=i+1;
if(lo[now]<=hi[now])mid[tengah(lo[now],hi[now])].push_back(now);
else{
sudah++;
Answer(arr[now],arr[res[now]]);
}
}
}
else{
if(nxt==prev){
lo[now]=i+1;
if(lo[now]<=hi[now])mid[tengah(lo[now],hi[now])].push_back(now);
else{
sudah++;
Answer(arr[now],arr[res[now]]);
}
}
else{
hi[now]=i-1;
res[now]=i;
if(lo[now]<=hi[now])mid[tengah(lo[now],hi[now])].push_back(now);
else{
sudah++;
Answer(arr[now],arr[res[now]]);
}
}
}
if(sudah==N)return;
prev=nxt;
}
}
prefix=1-prefix;
}
}
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