#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define INF 1000000000
#define LINF 1000000000000000LL
#define pb push_back
#define all(x) x.begin(), x.end()
#define len(s) (int)s.size()
#define test_case { int t; cin>>t; while(t--)solve(); }
#define input(n, v) {for(int i = 0;i<n;i++) cin>>v[i];}
#define output(n, v) {for(int i = 0;i<n;i++) cout<<v[i]<<" "; cout<<endl;}
#define single_case solve();
#define line cout<<"------------"<<endl;
#define ios { ios_base::sync_with_stdio(false); cin.tie(NULL); }
const int N = 2e5 + 50;
int seg[4*N];
int n;
int b[N];
vector<int> a;
void update(int node, int l, int r, int pos)
{
if(l==r){
seg[node] = 1;
return;
}
int mid = (l+r)/2;
if(pos>mid) update(node*2+2, mid+1, r, pos);
else update(node*2+1, l, mid, pos);
seg[node] = seg[node*2+1] + seg[node*2+2];
}
int get_sum(int node, int l, int r, int i, int j)
{
if(l>r) return 0;
if(i>r||j<l) return 0;
if(i>=l&&j<=r) return seg[node];
int mid = (i+j)/2;
return get_sum(node*2+1, l, r, i, mid) + get_sum(node*2+2, l, r, mid+1, j);
}
int prvanula(int node, int l, int r)
{
if(l==r){
if(seg[node]) return -1;
else return l;
}
int mid = (l+r)/2;
if(seg[node*2+1]==mid-l+1) return prvanula(node*2+2, mid+1, r);
else return prvanula(node*2+1, l, mid);
}
int poslednjanula(int node, int l, int r)
{
if(l==r)
{
if(seg[node]) return -1;
else return l;
}
int mid = (l+r)/2;
if(seg[node*2+2]==r-(mid+1)+1) return poslednjanula(node*2+1, l, mid);
else return poslednjanula(node*2+2, mid+1, r);
}
int main()
{
ios
cin>>n;
for(int i = 0;i<n;i++) cin>>b[i];
update(0, 1, 2*n-1, b[0]);
a.pb(b[0]);
for(int i = 1;i<n;i++)
{
int x = b[i];
int s = 0;
if(get_sum(0, x, x, 1, 2*n-1)==0) a.pb(x), update(0, 1, 2*n-1, x), s = 1;
int cl = get_sum(0, 1, x-1, 1, 2*n-1);
int cr = get_sum(0, x+1, 2*n-1, 1, 2*n-1);
//cout<<cl<<" "<<cr<<endl;
if(cr>cl)
{
if(s)
{
//cout<<1<<" "<<endl;
int l = prvanula(0, 1, 2*n-1);
a.pb(l);
update(0, 1, 2*n-1, l);
}
else
{
//cout<<2<<" "<<endl;
int l = prvanula(0, 1, 2*n-1);
a.pb(l);
update(0, 1, 2*n-1, l);
l = prvanula(0, 1, 2*n-1);
a.pb(l);
update(0, 1, 2*n-1, l);
}
}
else if(cl>cr)
{
if(s)
{
//cout<<3<<" "<<endl;
int r = poslednjanula(0, 1, 2*n-1);
a.pb(r);
update(0, 1, 2*n-1, r);
}
else
{
//cout<<4<<" "<<endl;
int r = poslednjanula(0, 1, 2*n-1);
a.pb(r);
update(0, 1, 2*n-1, r);
r = poslednjanula(0, 1, 2*n-1);
a.pb(r);
update(0, 1, 2*n-1, r);
}
}
else
{
//cout<<5<<" "<<endl;
int l = prvanula(0, 1, 2*n-1);
int r = poslednjanula(0, 1, 2*n-1);
//cout<<l<<" "<<r<<"-----"<<endl;
a.pb(l);
a.pb(r);
update(0, 1, 2*n-1, l);
update(0, 1, 2*n-1, r);
}
}
for(int x : a)
cout<<x<<" ";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
2 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
492 KB |
Output is correct |
| 2 |
Correct |
4 ms |
492 KB |
Output is correct |
| 3 |
Correct |
9 ms |
748 KB |
Output is correct |
| 4 |
Correct |
18 ms |
1132 KB |
Output is correct |
| 5 |
Correct |
36 ms |
1776 KB |
Output is correct |
| 6 |
Correct |
73 ms |
3048 KB |
Output is correct |
| 7 |
Correct |
120 ms |
4964 KB |
Output is correct |
