#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;
const int INF = 1e9 + 7;
signed main()
{
IO_OP;
int n;
cin >> n;
V<ll> a(n);
set<int> alive;
priority_queue<pair<ll, int>> pq;
for(int i = 0; i < n; i++) {
cin >> a[i];
alive.insert(i);
pq.push({a[i], i});
}
ll ans = 0;
for(int i = 0; i < (n + 1) / 2; i++) {
auto p = pq.top(); pq.pop();
if(alive.count(p.S) == 0) {
i--;
continue;
}
auto it = alive.find(p.S);
ans += p.F;
if(it != alive.begin() && next(it) != alive.end()) {
int l = *prev(it), r = *next(it);
alive.erase(l), alive.erase(r);
a[p.S] = a[l] + a[r] - a[p.S];
pq.push({a[p.S], p.S});
} else {
if(it != alive.begin()) alive.erase(prev(it));
if(next(it) != alive.end()) alive.erase(next(it));
alive.erase(it);
}
cout << ans << '\n';
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
620 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
2 ms |
492 KB |
Output is correct |
| 6 |
Correct |
2 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
492 KB |
Output is correct |
| 9 |
Correct |
2 ms |
492 KB |
Output is correct |
| 10 |
Correct |
2 ms |
492 KB |
Output is correct |
| 11 |
Correct |
2 ms |
492 KB |
Output is correct |
| 12 |
Correct |
2 ms |
492 KB |
Output is correct |
| 13 |
Correct |
2 ms |
492 KB |
Output is correct |
| 14 |
Correct |
2 ms |
492 KB |
Output is correct |
| 15 |
Correct |
2 ms |
492 KB |
Output is correct |
| 16 |
Correct |
2 ms |
492 KB |
Output is correct |
| 17 |
Correct |
2 ms |
492 KB |
Output is correct |
| 18 |
Correct |
2 ms |
492 KB |
Output is correct |
| 19 |
Correct |
2 ms |
492 KB |
Output is correct |
| 20 |
Correct |
2 ms |
492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
620 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
2 ms |
492 KB |
Output is correct |
| 6 |
Correct |
2 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
492 KB |
Output is correct |
| 9 |
Correct |
2 ms |
492 KB |
Output is correct |
| 10 |
Correct |
2 ms |
492 KB |
Output is correct |
| 11 |
Correct |
2 ms |
492 KB |
Output is correct |
| 12 |
Correct |
2 ms |
492 KB |
Output is correct |
| 13 |
Correct |
2 ms |
492 KB |
Output is correct |
| 14 |
Correct |
2 ms |
492 KB |
Output is correct |
| 15 |
Correct |
2 ms |
492 KB |
Output is correct |
| 16 |
Correct |
2 ms |
492 KB |
Output is correct |
| 17 |
Correct |
2 ms |
492 KB |
Output is correct |
| 18 |
Correct |
2 ms |
492 KB |
Output is correct |
| 19 |
Correct |
2 ms |
492 KB |
Output is correct |
| 20 |
Correct |
2 ms |
492 KB |
Output is correct |
| 21 |
Correct |
399 ms |
17872 KB |
Output is correct |
| 22 |
Correct |
399 ms |
17912 KB |
Output is correct |
| 23 |
Correct |
375 ms |
18132 KB |
Output is correct |
| 24 |
Correct |
212 ms |
17956 KB |
Output is correct |
| 25 |
Correct |
237 ms |
17748 KB |
Output is correct |
| 26 |
Correct |
206 ms |
17768 KB |
Output is correct |
| 27 |
Correct |
228 ms |
17876 KB |
Output is correct |
| 28 |
Correct |
219 ms |
17876 KB |
Output is correct |
| 29 |
Correct |
222 ms |
18308 KB |
Output is correct |
| 30 |
Correct |
225 ms |
17876 KB |
Output is correct |
| 31 |
Correct |
230 ms |
18020 KB |
Output is correct |
| 32 |
Correct |
232 ms |
17876 KB |
Output is correct |
| 33 |
Correct |
283 ms |
17620 KB |
Output is correct |
| 34 |
Correct |
275 ms |
17736 KB |
Output is correct |
| 35 |
Correct |
286 ms |
17716 KB |
Output is correct |
| 36 |
Correct |
377 ms |
18004 KB |
Output is correct |
| 37 |
Correct |
387 ms |
18004 KB |
Output is correct |
| 38 |
Correct |
385 ms |
18004 KB |
Output is correct |
| 39 |
Correct |
203 ms |
17748 KB |
Output is correct |
| 40 |
Correct |
209 ms |
17748 KB |
Output is correct |
| 41 |
Correct |
213 ms |
17748 KB |
Output is correct |
| 42 |
Correct |
217 ms |
18004 KB |
Output is correct |
| 43 |
Correct |
218 ms |
18004 KB |
Output is correct |
| 44 |
Correct |
213 ms |
17876 KB |
Output is correct |
| 45 |
Correct |
219 ms |
17876 KB |
Output is correct |
| 46 |
Correct |
233 ms |
17876 KB |
Output is correct |
| 47 |
Correct |
228 ms |
18004 KB |
Output is correct |
| 48 |
Correct |
273 ms |
17620 KB |
Output is correct |
| 49 |
Correct |
282 ms |
17876 KB |
Output is correct |
| 50 |
Correct |
276 ms |
17620 KB |
Output is correct |
