#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;
set<pair<ll, ll> > 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});
}
for(int i = 1; i <= (n + 1) / 2; ++i){
pair<ll, ll> x = *p.begin();
ans -= x.ff;
swap(x.ff, x.ss);
auto it = a.find(x);
pair<ll, ll> s = x;
s.ss *= -1;
p.erase({it -> ss, it -> ff});
it = a.erase(it);
if(it != a.end()){
s.ss += it -> ss;
p.erase({it -> ss, it -> ff});
it = a.erase(it);
}
if(it != a.begin()){
--it;
s.ss += it -> ss;
p.erase({it -> ss, it -> ff});
a.erase(it);
}
a.insert(s);
p.insert({s.ss, s.ff});
cout<<ans<<'\n';
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
640 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
640 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
