#include <bits/stdc++.h>
using namespace std;
const int MAXN = 200005;
int L[MAXN], R[MAXN];
long long V[MAXN];
struct comp {
bool operator () (int x, int y) const {
return V[x] > V[y] ||
(V[x] == V[y] && x > y);
}
};
int main() {
cin.tie(0)->sync_with_stdio(0);
int N; cin >> N;
set<int, comp> S;
for (int i = 1; i <= N; i++) {
cin >> V[i];
L[i] = R[i] = i;
S.insert(i);
}
long long res = 0;
while (S.size()) {
auto it = S.begin();
S.erase(it);
int l = *it, r = R[*it];
res += V[l];
if (S.count(r + 1) &&
S.count(L[l - 1])) {
S.erase(r + 1);
V[l] -= V[r + 1];
r = R[r + 1];
S.erase(L[l - 1]);
V[L[l - 1]] -= V[l];
l = L[l - 1];
L[r] = l; R[l] = r;
S.insert(l);
} else {
S.erase(r + 1);
S.erase(L[l - 1]);
}
cout << res << '\n';
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
460 KB |
Output is correct |
| 2 |
Correct |
2 ms |
460 KB |
Output is correct |
| 3 |
Correct |
2 ms |
460 KB |
Output is correct |
| 4 |
Correct |
2 ms |
460 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Correct |
2 ms |
460 KB |
Output is correct |
| 7 |
Correct |
2 ms |
460 KB |
Output is correct |
| 8 |
Correct |
2 ms |
460 KB |
Output is correct |
| 9 |
Correct |
2 ms |
460 KB |
Output is correct |
| 10 |
Correct |
2 ms |
460 KB |
Output is correct |
| 11 |
Correct |
2 ms |
460 KB |
Output is correct |
| 12 |
Correct |
2 ms |
460 KB |
Output is correct |
| 13 |
Correct |
3 ms |
532 KB |
Output is correct |
| 14 |
Correct |
2 ms |
460 KB |
Output is correct |
| 15 |
Correct |
2 ms |
460 KB |
Output is correct |
| 16 |
Correct |
2 ms |
460 KB |
Output is correct |
| 17 |
Correct |
2 ms |
460 KB |
Output is correct |
| 18 |
Correct |
2 ms |
460 KB |
Output is correct |
| 19 |
Correct |
2 ms |
460 KB |
Output is correct |
| 20 |
Correct |
2 ms |
460 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
460 KB |
Output is correct |
| 2 |
Correct |
2 ms |
460 KB |
Output is correct |
| 3 |
Correct |
2 ms |
460 KB |
Output is correct |
| 4 |
Correct |
2 ms |
460 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Correct |
2 ms |
460 KB |
Output is correct |
| 7 |
Correct |
2 ms |
460 KB |
Output is correct |
| 8 |
Correct |
2 ms |
460 KB |
Output is correct |
| 9 |
Correct |
2 ms |
460 KB |
Output is correct |
| 10 |
Correct |
2 ms |
460 KB |
Output is correct |
| 11 |
Correct |
2 ms |
460 KB |
Output is correct |
| 12 |
Correct |
2 ms |
460 KB |
Output is correct |
| 13 |
Correct |
3 ms |
532 KB |
Output is correct |
| 14 |
Correct |
2 ms |
460 KB |
Output is correct |
| 15 |
Correct |
2 ms |
460 KB |
Output is correct |
| 16 |
Correct |
2 ms |
460 KB |
Output is correct |
| 17 |
Correct |
2 ms |
460 KB |
Output is correct |
| 18 |
Correct |
2 ms |
460 KB |
Output is correct |
| 19 |
Correct |
2 ms |
460 KB |
Output is correct |
| 20 |
Correct |
2 ms |
460 KB |
Output is correct |
| 21 |
Correct |
440 ms |
16156 KB |
Output is correct |
| 22 |
Correct |
478 ms |
16312 KB |
Output is correct |
| 23 |
Correct |
468 ms |
16228 KB |
Output is correct |
| 24 |
Correct |
193 ms |
16068 KB |
Output is correct |
| 25 |
Correct |
194 ms |
16068 KB |
Output is correct |
| 26 |
Correct |
198 ms |
16056 KB |
Output is correct |
| 27 |
Correct |
209 ms |
16228 KB |
Output is correct |
| 28 |
Correct |
202 ms |
16228 KB |
Output is correct |
| 29 |
Correct |
206 ms |
16200 KB |
Output is correct |
| 30 |
Correct |
216 ms |
16240 KB |
Output is correct |
| 31 |
Correct |
224 ms |
16216 KB |
Output is correct |
| 32 |
Correct |
223 ms |
16196 KB |
Output is correct |
| 33 |
Correct |
347 ms |
16032 KB |
Output is correct |
| 34 |
Correct |
340 ms |
15956 KB |
Output is correct |
| 35 |
Correct |
312 ms |
15980 KB |
Output is correct |
| 36 |
Correct |
485 ms |
16164 KB |
Output is correct |
| 37 |
Correct |
423 ms |
16176 KB |
Output is correct |
| 38 |
Correct |
486 ms |
16200 KB |
Output is correct |
| 39 |
Correct |
192 ms |
16016 KB |
Output is correct |
| 40 |
Correct |
188 ms |
16068 KB |
Output is correct |
| 41 |
Correct |
212 ms |
16068 KB |
Output is correct |
| 42 |
Correct |
202 ms |
16260 KB |
Output is correct |
| 43 |
Correct |
203 ms |
16240 KB |
Output is correct |
| 44 |
Correct |
207 ms |
16176 KB |
Output is correct |
| 45 |
Correct |
213 ms |
16160 KB |
Output is correct |
| 46 |
Correct |
222 ms |
16304 KB |
Output is correct |
| 47 |
Correct |
216 ms |
16196 KB |
Output is correct |
| 48 |
Correct |
326 ms |
16024 KB |
Output is correct |
| 49 |
Correct |
329 ms |
16020 KB |
Output is correct |
| 50 |
Correct |
331 ms |
16024 KB |
Output is correct |
