#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll n, a[200005];
typedef pair<int,int> ii;
typedef pair<ll,ii> Iii;
typedef pair<int,Iii> iIii;
priority_queue <Iii> q;
set <Iii> pq;
Iii bounded[200005];
int main(){
iostream::sync_with_stdio(0);
cin >> n;
for(int i=1;i<=n;i++){
cin >> a[i];
pq.insert(Iii(a[i], ii(i, i)));
bounded[i] = Iii(a[i], ii(i, i));
}
ll summ = 0;
int boundL = 1;
int boundR = n;
for(int _=1;_<=(n+1)/2;_++){
Iii best;
while(1){
best = *pq.rbegin();
pq.erase(best);
if (best.second.first < boundL || boundR < best.second.second) continue;
break;
}
summ += best.first;
Iii tmp = Iii(-best.first, ii(best.second.first-1,best.second.second+1));
//cout << best.second.first << ' ' << best.second.second << endl;
//cout << boundL << ' ' << boundR << endl;
if (tmp.second.first > 0){
pq.erase(bounded[tmp.second.first]);
tmp.first += bounded[tmp.second.first].first;
tmp.second.first = bounded[tmp.second.first].second.first;
}
if (tmp.second.second <=n){
pq.erase(bounded[tmp.second.second]);
tmp.first += bounded[tmp.second.second].first;
tmp.second.second = bounded[tmp.second.second].second.second;
}
if (tmp.second.first > 0) bounded[tmp.second.first] = tmp;
if (tmp.second.second <= n)bounded[tmp.second.second] = tmp;
cout << summ << '\n';
if (best.second.first == boundL){
boundL = best.second.second+2;
continue;
}
if (best.second.second == boundR){
boundR = best.second.first-2;
continue;
}
pq.insert(tmp);
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
504 KB |
Output is correct |
| 2 |
Correct |
3 ms |
612 KB |
Output is correct |
| 3 |
Correct |
3 ms |
612 KB |
Output is correct |
| 4 |
Correct |
3 ms |
612 KB |
Output is correct |
| 5 |
Correct |
3 ms |
680 KB |
Output is correct |
| 6 |
Correct |
3 ms |
680 KB |
Output is correct |
| 7 |
Correct |
3 ms |
748 KB |
Output is correct |
| 8 |
Correct |
3 ms |
748 KB |
Output is correct |
| 9 |
Correct |
3 ms |
748 KB |
Output is correct |
| 10 |
Correct |
3 ms |
852 KB |
Output is correct |
| 11 |
Correct |
3 ms |
912 KB |
Output is correct |
| 12 |
Correct |
3 ms |
912 KB |
Output is correct |
| 13 |
Correct |
3 ms |
912 KB |
Output is correct |
| 14 |
Correct |
3 ms |
912 KB |
Output is correct |
| 15 |
Correct |
3 ms |
912 KB |
Output is correct |
| 16 |
Correct |
3 ms |
912 KB |
Output is correct |
| 17 |
Correct |
3 ms |
912 KB |
Output is correct |
| 18 |
Correct |
3 ms |
912 KB |
Output is correct |
| 19 |
Correct |
3 ms |
912 KB |
Output is correct |
| 20 |
Correct |
3 ms |
912 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
504 KB |
Output is correct |
| 2 |
Correct |
3 ms |
612 KB |
Output is correct |
| 3 |
Correct |
3 ms |
612 KB |
Output is correct |
| 4 |
Correct |
3 ms |
612 KB |
Output is correct |
| 5 |
Correct |
3 ms |
680 KB |
Output is correct |
| 6 |
Correct |
3 ms |
680 KB |
Output is correct |
| 7 |
Correct |
3 ms |
748 KB |
Output is correct |
| 8 |
Correct |
3 ms |
748 KB |
Output is correct |
| 9 |
Correct |
3 ms |
748 KB |
Output is correct |
| 10 |
Correct |
3 ms |
852 KB |
Output is correct |
| 11 |
Correct |
3 ms |
912 KB |
Output is correct |
| 12 |
Correct |
3 ms |
912 KB |
Output is correct |
| 13 |
Correct |
3 ms |
912 KB |
Output is correct |
| 14 |
Correct |
3 ms |
912 KB |
Output is correct |
| 15 |
Correct |
3 ms |
912 KB |
Output is correct |
| 16 |
Correct |
3 ms |
912 KB |
Output is correct |
| 17 |
Correct |
3 ms |
912 KB |
Output is correct |
| 18 |
Correct |
3 ms |
912 KB |
Output is correct |
| 19 |
Correct |
3 ms |
912 KB |
Output is correct |
| 20 |
Correct |
3 ms |
912 KB |
Output is correct |
| 21 |
Correct |
446 ms |
19308 KB |
Output is correct |
| 22 |
Correct |
465 ms |
19312 KB |
Output is correct |
| 23 |
Correct |
453 ms |
19312 KB |
Output is correct |
| 24 |
Correct |
177 ms |
19312 KB |
Output is correct |
| 25 |
Correct |
187 ms |
19312 KB |
Output is correct |
| 26 |
Correct |
178 ms |
19312 KB |
Output is correct |
| 27 |
Correct |
188 ms |
19364 KB |
Output is correct |
| 28 |
Correct |
189 ms |
19364 KB |
Output is correct |
| 29 |
Correct |
190 ms |
19372 KB |
Output is correct |
| 30 |
Correct |
207 ms |
19472 KB |
Output is correct |
| 31 |
Correct |
210 ms |
19472 KB |
Output is correct |
| 32 |
Correct |
203 ms |
19472 KB |
Output is correct |
| 33 |
Correct |
306 ms |
19472 KB |
Output is correct |
| 34 |
Correct |
286 ms |
19472 KB |
Output is correct |
| 35 |
Correct |
293 ms |
19472 KB |
Output is correct |
| 36 |
Correct |
458 ms |
19472 KB |
Output is correct |
| 37 |
Correct |
562 ms |
19472 KB |
Output is correct |
| 38 |
Correct |
537 ms |
19504 KB |
Output is correct |
| 39 |
Correct |
221 ms |
19504 KB |
Output is correct |
| 40 |
Correct |
189 ms |
19504 KB |
Output is correct |
| 41 |
Correct |
193 ms |
19504 KB |
Output is correct |
| 42 |
Correct |
208 ms |
19504 KB |
Output is correct |
| 43 |
Correct |
190 ms |
19504 KB |
Output is correct |
| 44 |
Correct |
201 ms |
19504 KB |
Output is correct |
| 45 |
Correct |
218 ms |
19504 KB |
Output is correct |
| 46 |
Correct |
204 ms |
19504 KB |
Output is correct |
| 47 |
Correct |
231 ms |
19504 KB |
Output is correct |
| 48 |
Correct |
298 ms |
19504 KB |
Output is correct |
| 49 |
Correct |
294 ms |
19504 KB |
Output is correct |
| 50 |
Correct |
292 ms |
19504 KB |
Output is correct |
