#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
ll a[500001], pref[500001];
pair<int, ll> dp[500001];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
deque<int> dq = {0};
for (int i = 1; i <= n; i++) {
cin >> a[i];
pref[i] = pref[i - 1] + a[i];
while (dq.size() > 1 && pref[i] - pref[dq[1]] >= dp[dq[1]].second)
dq.pop_front();
dp[i] = {dp[dq[0]].first + 1, pref[i] - pref[dq[0]]};
while (dq.size() && dp[dq.back()].second - dp[i].second >= pref[i] - pref[dq.back()])
dq.pop_back();
dq.push_back(i);
}
// for (int i = 1; i <= n; i++) cout << "(" << dp[i].first << ", " << dp[i].second << ") ";
// cout << '\n';
cout << dp[n].first;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
1 ms |
364 KB |
Output is correct |
26 |
Correct |
1 ms |
364 KB |
Output is correct |
27 |
Correct |
1 ms |
364 KB |
Output is correct |
28 |
Correct |
1 ms |
364 KB |
Output is correct |
29 |
Correct |
1 ms |
364 KB |
Output is correct |
30 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
1 ms |
364 KB |
Output is correct |
26 |
Correct |
1 ms |
364 KB |
Output is correct |
27 |
Correct |
1 ms |
364 KB |
Output is correct |
28 |
Correct |
1 ms |
364 KB |
Output is correct |
29 |
Correct |
1 ms |
364 KB |
Output is correct |
30 |
Correct |
1 ms |
364 KB |
Output is correct |
31 |
Correct |
1 ms |
364 KB |
Output is correct |
32 |
Correct |
1 ms |
492 KB |
Output is correct |
33 |
Correct |
2 ms |
492 KB |
Output is correct |
34 |
Correct |
1 ms |
492 KB |
Output is correct |
35 |
Correct |
1 ms |
492 KB |
Output is correct |
36 |
Correct |
1 ms |
492 KB |
Output is correct |
37 |
Correct |
1 ms |
492 KB |
Output is correct |
38 |
Correct |
1 ms |
492 KB |
Output is correct |
39 |
Correct |
1 ms |
492 KB |
Output is correct |
40 |
Correct |
1 ms |
492 KB |
Output is correct |
41 |
Correct |
1 ms |
492 KB |
Output is correct |
42 |
Correct |
1 ms |
492 KB |
Output is correct |
43 |
Correct |
1 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
492 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
1 ms |
364 KB |
Output is correct |
26 |
Correct |
1 ms |
364 KB |
Output is correct |
27 |
Correct |
1 ms |
364 KB |
Output is correct |
28 |
Correct |
1 ms |
364 KB |
Output is correct |
29 |
Correct |
1 ms |
364 KB |
Output is correct |
30 |
Correct |
1 ms |
364 KB |
Output is correct |
31 |
Correct |
1 ms |
364 KB |
Output is correct |
32 |
Correct |
1 ms |
492 KB |
Output is correct |
33 |
Correct |
2 ms |
492 KB |
Output is correct |
34 |
Correct |
1 ms |
492 KB |
Output is correct |
35 |
Correct |
1 ms |
492 KB |
Output is correct |
36 |
Correct |
1 ms |
492 KB |
Output is correct |
37 |
Correct |
1 ms |
492 KB |
Output is correct |
38 |
Correct |
1 ms |
492 KB |
Output is correct |
39 |
Correct |
1 ms |
492 KB |
Output is correct |
40 |
Correct |
1 ms |
492 KB |
Output is correct |
41 |
Correct |
1 ms |
492 KB |
Output is correct |
42 |
Correct |
1 ms |
492 KB |
Output is correct |
43 |
Correct |
1 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
492 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
46 |
Correct |
11 ms |
4332 KB |
Output is correct |
47 |
Correct |
12 ms |
3948 KB |
Output is correct |
48 |
Correct |
15 ms |
4332 KB |
Output is correct |
49 |
Correct |
16 ms |
4460 KB |
Output is correct |
50 |
Correct |
15 ms |
4460 KB |
Output is correct |
51 |
Correct |
17 ms |
4460 KB |
Output is correct |
52 |
Correct |
9 ms |
2412 KB |
Output is correct |
53 |
Correct |
5 ms |
1644 KB |
Output is correct |
54 |
Correct |
11 ms |
3692 KB |
Output is correct |
55 |
Correct |
16 ms |
4588 KB |
Output is correct |
56 |
Correct |
12 ms |
4076 KB |
Output is correct |
57 |
Correct |
12 ms |
4076 KB |
Output is correct |
58 |
Correct |
12 ms |
4076 KB |
Output is correct |
59 |
Correct |
12 ms |
4076 KB |
Output is correct |
60 |
Correct |
13 ms |
4076 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
1 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
1 ms |
364 KB |
Output is correct |
21 |
Correct |
1 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
1 ms |
364 KB |
Output is correct |
26 |
Correct |
1 ms |
364 KB |
Output is correct |
27 |
Correct |
1 ms |
364 KB |
Output is correct |
28 |
Correct |
1 ms |
364 KB |
Output is correct |
29 |
Correct |
1 ms |
364 KB |
Output is correct |
30 |
Correct |
1 ms |
364 KB |
Output is correct |
31 |
Correct |
1 ms |
364 KB |
Output is correct |
32 |
Correct |
1 ms |
492 KB |
Output is correct |
33 |
Correct |
2 ms |
492 KB |
Output is correct |
34 |
Correct |
1 ms |
492 KB |
Output is correct |
35 |
Correct |
1 ms |
492 KB |
Output is correct |
36 |
Correct |
1 ms |
492 KB |
Output is correct |
37 |
Correct |
1 ms |
492 KB |
Output is correct |
38 |
Correct |
1 ms |
492 KB |
Output is correct |
39 |
Correct |
1 ms |
492 KB |
Output is correct |
40 |
Correct |
1 ms |
492 KB |
Output is correct |
41 |
Correct |
1 ms |
492 KB |
Output is correct |
42 |
Correct |
1 ms |
492 KB |
Output is correct |
43 |
Correct |
1 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
492 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
46 |
Correct |
11 ms |
4332 KB |
Output is correct |
47 |
Correct |
12 ms |
3948 KB |
Output is correct |
48 |
Correct |
15 ms |
4332 KB |
Output is correct |
49 |
Correct |
16 ms |
4460 KB |
Output is correct |
50 |
Correct |
15 ms |
4460 KB |
Output is correct |
51 |
Correct |
17 ms |
4460 KB |
Output is correct |
52 |
Correct |
9 ms |
2412 KB |
Output is correct |
53 |
Correct |
5 ms |
1644 KB |
Output is correct |
54 |
Correct |
11 ms |
3692 KB |
Output is correct |
55 |
Correct |
16 ms |
4588 KB |
Output is correct |
56 |
Correct |
12 ms |
4076 KB |
Output is correct |
57 |
Correct |
12 ms |
4076 KB |
Output is correct |
58 |
Correct |
12 ms |
4076 KB |
Output is correct |
59 |
Correct |
12 ms |
4076 KB |
Output is correct |
60 |
Correct |
13 ms |
4076 KB |
Output is correct |
61 |
Correct |
53 ms |
19948 KB |
Output is correct |
62 |
Correct |
55 ms |
19000 KB |
Output is correct |
63 |
Correct |
59 ms |
18540 KB |
Output is correct |
64 |
Correct |
75 ms |
20588 KB |
Output is correct |
65 |
Correct |
72 ms |
20992 KB |
Output is correct |
66 |
Correct |
84 ms |
20844 KB |
Output is correct |
67 |
Correct |
67 ms |
16748 KB |
Output is correct |
68 |
Correct |
33 ms |
8556 KB |
Output is correct |
69 |
Correct |
56 ms |
17004 KB |
Output is correct |
70 |
Correct |
81 ms |
20972 KB |
Output is correct |
71 |
Correct |
53 ms |
17900 KB |
Output is correct |
72 |
Correct |
59 ms |
19180 KB |
Output is correct |
73 |
Correct |
60 ms |
19308 KB |
Output is correct |
74 |
Correct |
61 ms |
19308 KB |
Output is correct |
75 |
Correct |
62 ms |
19288 KB |
Output is correct |