이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "fun.h"
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define all(x) x.begin(),x.end()
const int N=100005;
int cntid=0;
const int INF=1e9;
vector<int> ans;
priority_queue<pair<int,int>> pq[4];
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
vector<int> createFunTour(int n, int q) {
ans.clear();
int c1=0;
int need=(n+1)/2;
int mn=INF;
for(int i=0;i<n-1;i++){
int t=attractionsBehind(0, i);
if(t>=need&&t<mn){
mn=t;
c1=i;
}
}
vector<int> r;
vector<int> dis0(N,0);
for(int i=0;i<n;i++){
dis0[i]=hoursRequired(c1,i);
if(dis0[i]==1){
r.push_back(i);
}
}
int rsz=r.size()-1;
assert(rsz<=2);
vector<vector<int>> dis(rsz,vector<int>(N));
vector<int> vis(N);
for(int i=0;i<rsz;i++){
for(int j=0;j<n;j++){
dis[i][j]=hoursRequired(r[i],j);
}
}
for(int i=0;i<n;i++){
if(i==c1)continue;
int p=-1;
for(int j=0;j<rsz;j++){
if(dis[j][i]<dis0[i]){
p=j;break;
}
}
if(p==-1)p=rsz;
pq[p].push({dis0[i],i});
}
cntid=4;
int last=0;
int left=n-1;int mer=0;
for(int i=1;i<n;i++){
array<int,3> p={-1,-1,-1};
for(int j=0;j<cntid;j++){
if(j==last||pq[j].size()==0)continue;
p=max(p,array<int,3>{pq[j].top().first,(int)pq[j].size(),j});
}
pair<int,int> mx={-1,-1};
for(int j=0;j<cntid;j++){
mx=max(mx,{(int)pq[j].size(),j});
}
if(mer==0&&(left-mx.first)<mx.first){
mer=1;
if(last!=mx.S&&(!pq[last].empty()&&!pq[3-last-mx.S].empty())&&pq[last].top().F<pq[3-last-mx.S].top().first){
last=3-last-mx.second;
ans.push_back(pq[last].top().second);
pq[last].pop();
i++;
}
if(last==mx.S)last=(last+1)%3;
while(!pq[last].empty()){
pq[3-last-mx.S].push(pq[last].top());
pq[last].pop();
}
//assert(last!=mx.second);
p[2]=mx.second;
}
last=(p[2]==-1?last:p[2]);
//assert(last!=-1&&pq[last].size()>0);
auto [dis1,idx]=pq[last].top();
pq[last].pop();
ans.push_back(idx);
left--;
}
ans.push_back(c1);
// for(int j:ans){
// cout<<j<<' ';
// }
// cout<<endl;
return ans;
}
/*
46 100000
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 10
10 11
11 12
12 13
13 14
14 15
0 16
16 17
17 18
18 19
19 20
20 21
21 22
22 23
23 24
24 25
25 26
26 27
27 28
28 29
29 30
0 31
31 32
31 33
32 34
32 35
33 36
33 37
34 38
34 39
35 40
35 41
36 42
36 43
37 44
37 45
*/
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