#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 200005
const ll MOD = 1'000'000'007;
const int INF = 0x3f3f3f3f;
set<pair<ll, ll> > a, p;
ll ans = 0;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin>>n;
for(int x, i = 1; i <= n; ++i){
cin>>x;
x *= -1;
a.insert({i, x});
p.insert({x, i});
}
a.insert({0, 1'000'000'000'000'000'000});
a.insert({n + 1, 1'000'000'000'000'000'000});
p.insert({1'000'000'000'000'000'000, 0});
p.insert({1'000'000'000'000'000'000, n + 1});
for(int i = 1; i <= (n + 1) / 2; ++i){
pair<ll, ll> x = *p.begin();
swap(x.ff, x.ss);
ans -= x.ss;
auto it = a.find(x);
x.ss = 0;
--it;
x.ss += it -> ss;
p.erase({it -> ss, it -> ff});
it = a.erase(it);
x.ss -= it -> ss;
p.erase({it -> ss, it -> ff});
it = a.erase(it);
x.ss += it -> ss;
p.erase({it -> ss, it -> ff});
it = a.erase(it);
a.insert(x);
p.insert({x.ss, x.ff});
cout<<ans<<'\n';
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
640 KB |
Output is correct |
| 2 |
Correct |
7 ms |
640 KB |
Output is correct |
| 3 |
Correct |
7 ms |
640 KB |
Output is correct |
| 4 |
Correct |
8 ms |
640 KB |
Output is correct |
| 5 |
Correct |
7 ms |
640 KB |
Output is correct |
| 6 |
Correct |
6 ms |
640 KB |
Output is correct |
| 7 |
Correct |
7 ms |
640 KB |
Output is correct |
| 8 |
Correct |
8 ms |
640 KB |
Output is correct |
| 9 |
Correct |
6 ms |
640 KB |
Output is correct |
| 10 |
Correct |
6 ms |
640 KB |
Output is correct |
| 11 |
Correct |
8 ms |
640 KB |
Output is correct |
| 12 |
Correct |
7 ms |
640 KB |
Output is correct |
| 13 |
Correct |
7 ms |
640 KB |
Output is correct |
| 14 |
Correct |
8 ms |
640 KB |
Output is correct |
| 15 |
Correct |
6 ms |
640 KB |
Output is correct |
| 16 |
Correct |
7 ms |
640 KB |
Output is correct |
| 17 |
Correct |
7 ms |
640 KB |
Output is correct |
| 18 |
Correct |
7 ms |
640 KB |
Output is correct |
| 19 |
Correct |
6 ms |
640 KB |
Output is correct |
| 20 |
Correct |
6 ms |
616 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
640 KB |
Output is correct |
| 2 |
Correct |
7 ms |
640 KB |
Output is correct |
| 3 |
Correct |
7 ms |
640 KB |
Output is correct |
| 4 |
Correct |
8 ms |
640 KB |
Output is correct |
| 5 |
Correct |
7 ms |
640 KB |
Output is correct |
| 6 |
Correct |
6 ms |
640 KB |
Output is correct |
| 7 |
Correct |
7 ms |
640 KB |
Output is correct |
| 8 |
Correct |
8 ms |
640 KB |
Output is correct |
| 9 |
Correct |
6 ms |
640 KB |
Output is correct |
| 10 |
Correct |
6 ms |
640 KB |
Output is correct |
| 11 |
Correct |
8 ms |
640 KB |
Output is correct |
| 12 |
Correct |
7 ms |
640 KB |
Output is correct |
| 13 |
Correct |
7 ms |
640 KB |
Output is correct |
| 14 |
Correct |
8 ms |
640 KB |
Output is correct |
| 15 |
Correct |
6 ms |
640 KB |
Output is correct |
| 16 |
Correct |
7 ms |
640 KB |
Output is correct |
| 17 |
Correct |
7 ms |
640 KB |
Output is correct |
| 18 |
Correct |
7 ms |
640 KB |
Output is correct |
| 19 |
Correct |
6 ms |
640 KB |
Output is correct |
| 20 |
Correct |
6 ms |
616 KB |
Output is correct |
| 21 |
Correct |
569 ms |
28792 KB |
Output is correct |
| 22 |
Correct |
567 ms |
28792 KB |
Output is correct |
| 23 |
Correct |
581 ms |
28792 KB |
Output is correct |
| 24 |
Correct |
268 ms |
28664 KB |
Output is correct |
| 25 |
Correct |
264 ms |
28732 KB |
Output is correct |
| 26 |
Correct |
278 ms |
28680 KB |
Output is correct |
| 27 |
Correct |
306 ms |
28920 KB |
Output is correct |
| 28 |
Correct |
276 ms |
28792 KB |
Output is correct |
| 29 |
Correct |
283 ms |
28920 KB |
Output is correct |
| 30 |
Correct |
303 ms |
28796 KB |
Output is correct |
| 31 |
Correct |
297 ms |
28792 KB |
Output is correct |
| 32 |
Correct |
300 ms |
28792 KB |
Output is correct |
| 33 |
Correct |
410 ms |
28664 KB |
Output is correct |
| 34 |
Correct |
405 ms |
28664 KB |
Output is correct |
| 35 |
Correct |
430 ms |
28792 KB |
Output is correct |
| 36 |
Correct |
594 ms |
28920 KB |
Output is correct |
| 37 |
Correct |
602 ms |
28792 KB |
Output is correct |
| 38 |
Correct |
603 ms |
29008 KB |
Output is correct |
| 39 |
Correct |
287 ms |
28668 KB |
Output is correct |
| 40 |
Correct |
271 ms |
28664 KB |
Output is correct |
| 41 |
Correct |
273 ms |
28664 KB |
Output is correct |
| 42 |
Correct |
281 ms |
28792 KB |
Output is correct |
| 43 |
Correct |
289 ms |
28796 KB |
Output is correct |
| 44 |
Correct |
298 ms |
28792 KB |
Output is correct |
| 45 |
Correct |
302 ms |
28920 KB |
Output is correct |
| 46 |
Correct |
289 ms |
28792 KB |
Output is correct |
| 47 |
Correct |
309 ms |
28920 KB |
Output is correct |
| 48 |
Correct |
452 ms |
28792 KB |
Output is correct |
| 49 |
Correct |
416 ms |
28664 KB |
Output is correct |
| 50 |
Correct |
419 ms |
28664 KB |
Output is correct |
