#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define sz size()
#define pb push_back
using namespace std;
const int N = 5e5 + 5;
ll dp[N], p[N], a[N], val[N];
ll ind;
int main () {
// freopen("testcase.txt", "r", stdin);
ll n;
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> a[i];
p[i] = a[i] + p[i - 1];
}
vector <pair <int, ll>> v;
for (int i = 1; i <= n; ++i) {
if (!v.empty()) {
int jog = -1;
int l = 0, r = (int)v.sz - 1;
while (l <= r) {
int md = (l + r) / 2;
if (v[md].ss > p[i]) {
r = md - 1;
}
else {
jog = v[md].ff;
l = md + 1;
}
}
if (jog == -1) {
val[i] = p[i];
dp[i] = 1;
}
else {
val[i] = p[i] - p[jog];
dp[i] = 1 + dp[jog];
}
}
else {
dp[i] = dp[i - 1] + 1;
val[i] = a[i];
}
while (!v.empty() and v.back().ss >= val[i] + p[i]) v.pop_back();
v.pb ({i, val[i] + p[i]});
}
cout << dp[n];
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2492 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
0 ms |
2496 KB |
Output is correct |
11 |
Correct |
1 ms |
2748 KB |
Output is correct |
12 |
Correct |
0 ms |
2492 KB |
Output is correct |
13 |
Correct |
0 ms |
2392 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2492 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
0 ms |
2496 KB |
Output is correct |
11 |
Correct |
1 ms |
2748 KB |
Output is correct |
12 |
Correct |
0 ms |
2492 KB |
Output is correct |
13 |
Correct |
0 ms |
2392 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2648 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2392 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2512 KB |
Output is correct |
26 |
Correct |
1 ms |
2392 KB |
Output is correct |
27 |
Correct |
1 ms |
2396 KB |
Output is correct |
28 |
Correct |
1 ms |
2396 KB |
Output is correct |
29 |
Correct |
1 ms |
2396 KB |
Output is correct |
30 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2492 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
0 ms |
2496 KB |
Output is correct |
11 |
Correct |
1 ms |
2748 KB |
Output is correct |
12 |
Correct |
0 ms |
2492 KB |
Output is correct |
13 |
Correct |
0 ms |
2392 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2648 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2392 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2512 KB |
Output is correct |
26 |
Correct |
1 ms |
2392 KB |
Output is correct |
27 |
Correct |
1 ms |
2396 KB |
Output is correct |
28 |
Correct |
1 ms |
2396 KB |
Output is correct |
29 |
Correct |
1 ms |
2396 KB |
Output is correct |
30 |
Correct |
1 ms |
2396 KB |
Output is correct |
31 |
Correct |
2 ms |
2652 KB |
Output is correct |
32 |
Correct |
1 ms |
2652 KB |
Output is correct |
33 |
Correct |
2 ms |
2396 KB |
Output is correct |
34 |
Correct |
2 ms |
2512 KB |
Output is correct |
35 |
Correct |
2 ms |
2652 KB |
Output is correct |
36 |
Correct |
2 ms |
2652 KB |
Output is correct |
37 |
Correct |
1 ms |
2652 KB |
Output is correct |
38 |
Correct |
1 ms |
2396 KB |
Output is correct |
39 |
Correct |
1 ms |
2652 KB |
Output is correct |
40 |
Correct |
2 ms |
2652 KB |
Output is correct |
41 |
Correct |
1 ms |
2652 KB |
Output is correct |
42 |
Correct |
1 ms |
2652 KB |
Output is correct |
43 |
Correct |
1 ms |
2652 KB |
Output is correct |
44 |
Correct |
1 ms |
2652 KB |
Output is correct |
45 |
Correct |
1 ms |
2652 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2492 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
0 ms |
2496 KB |
Output is correct |
11 |
Correct |
1 ms |
2748 KB |
Output is correct |
12 |
Correct |
0 ms |
2492 KB |
Output is correct |
13 |
Correct |
0 ms |
2392 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2648 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2392 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2512 KB |
Output is correct |
26 |
Correct |
1 ms |
2392 KB |
Output is correct |
27 |
Correct |
1 ms |
2396 KB |
Output is correct |
28 |
Correct |
1 ms |
2396 KB |
Output is correct |
29 |
Correct |
1 ms |
2396 KB |
Output is correct |
30 |
Correct |
1 ms |
2396 KB |
Output is correct |
31 |
Correct |
2 ms |
2652 KB |
Output is correct |
32 |
Correct |
1 ms |
2652 KB |
Output is correct |
33 |
Correct |
2 ms |
2396 KB |
Output is correct |
34 |
Correct |
2 ms |
2512 KB |
Output is correct |
35 |
Correct |
2 ms |
2652 KB |
Output is correct |
36 |
Correct |
2 ms |
2652 KB |
Output is correct |
37 |
Correct |
1 ms |
2652 KB |
Output is correct |
38 |
Correct |
1 ms |
2396 KB |
Output is correct |
39 |
Correct |
1 ms |
2652 KB |
Output is correct |
40 |
Correct |
2 ms |
2652 KB |
Output is correct |
41 |
Correct |
1 ms |
2652 KB |
Output is correct |
42 |
Correct |
1 ms |
2652 KB |
Output is correct |
43 |
Correct |
1 ms |
2652 KB |
Output is correct |
44 |
Correct |
1 ms |
2652 KB |
Output is correct |
45 |
Correct |
1 ms |
2652 KB |
Output is correct |
46 |
Correct |
20 ms |
14280 KB |
Output is correct |
47 |
Correct |
23 ms |
13628 KB |
Output is correct |
48 |
Correct |
28 ms |
13136 KB |
Output is correct |
49 |
Correct |
31 ms |
14024 KB |
Output is correct |
50 |
Correct |
32 ms |
15124 KB |
Output is correct |
51 |
Correct |
34 ms |
14396 KB |
Output is correct |
52 |
Correct |
17 ms |
8916 KB |
Output is correct |
53 |
Correct |
10 ms |
5844 KB |
Output is correct |
54 |
Correct |
18 ms |
13516 KB |
Output is correct |
55 |
Correct |
36 ms |
14644 KB |
Output is correct |
56 |
Correct |
21 ms |
14276 KB |
Output is correct |
57 |
Correct |
22 ms |
14028 KB |
Output is correct |
58 |
Correct |
22 ms |
14016 KB |
Output is correct |
59 |
Correct |
25 ms |
14532 KB |
Output is correct |
60 |
Correct |
25 ms |
14276 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2492 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2392 KB |
Output is correct |
8 |
Correct |
1 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
2392 KB |
Output is correct |
10 |
Correct |
0 ms |
2496 KB |
Output is correct |
11 |
Correct |
1 ms |
2748 KB |
Output is correct |
12 |
Correct |
0 ms |
2492 KB |
Output is correct |
13 |
Correct |
0 ms |
2392 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2648 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2392 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2512 KB |
Output is correct |
26 |
Correct |
1 ms |
2392 KB |
Output is correct |
27 |
Correct |
1 ms |
2396 KB |
Output is correct |
28 |
Correct |
1 ms |
2396 KB |
Output is correct |
29 |
Correct |
1 ms |
2396 KB |
Output is correct |
30 |
Correct |
1 ms |
2396 KB |
Output is correct |
31 |
Correct |
2 ms |
2652 KB |
Output is correct |
32 |
Correct |
1 ms |
2652 KB |
Output is correct |
33 |
Correct |
2 ms |
2396 KB |
Output is correct |
34 |
Correct |
2 ms |
2512 KB |
Output is correct |
35 |
Correct |
2 ms |
2652 KB |
Output is correct |
36 |
Correct |
2 ms |
2652 KB |
Output is correct |
37 |
Correct |
1 ms |
2652 KB |
Output is correct |
38 |
Correct |
1 ms |
2396 KB |
Output is correct |
39 |
Correct |
1 ms |
2652 KB |
Output is correct |
40 |
Correct |
2 ms |
2652 KB |
Output is correct |
41 |
Correct |
1 ms |
2652 KB |
Output is correct |
42 |
Correct |
1 ms |
2652 KB |
Output is correct |
43 |
Correct |
1 ms |
2652 KB |
Output is correct |
44 |
Correct |
1 ms |
2652 KB |
Output is correct |
45 |
Correct |
1 ms |
2652 KB |
Output is correct |
46 |
Correct |
20 ms |
14280 KB |
Output is correct |
47 |
Correct |
23 ms |
13628 KB |
Output is correct |
48 |
Correct |
28 ms |
13136 KB |
Output is correct |
49 |
Correct |
31 ms |
14024 KB |
Output is correct |
50 |
Correct |
32 ms |
15124 KB |
Output is correct |
51 |
Correct |
34 ms |
14396 KB |
Output is correct |
52 |
Correct |
17 ms |
8916 KB |
Output is correct |
53 |
Correct |
10 ms |
5844 KB |
Output is correct |
54 |
Correct |
18 ms |
13516 KB |
Output is correct |
55 |
Correct |
36 ms |
14644 KB |
Output is correct |
56 |
Correct |
21 ms |
14276 KB |
Output is correct |
57 |
Correct |
22 ms |
14028 KB |
Output is correct |
58 |
Correct |
22 ms |
14016 KB |
Output is correct |
59 |
Correct |
25 ms |
14532 KB |
Output is correct |
60 |
Correct |
25 ms |
14276 KB |
Output is correct |
61 |
Correct |
90 ms |
25788 KB |
Output is correct |
62 |
Correct |
96 ms |
25900 KB |
Output is correct |
63 |
Correct |
108 ms |
26556 KB |
Output is correct |
64 |
Correct |
142 ms |
22184 KB |
Output is correct |
65 |
Correct |
153 ms |
29120 KB |
Output is correct |
66 |
Correct |
162 ms |
29424 KB |
Output is correct |
67 |
Correct |
183 ms |
27328 KB |
Output is correct |
68 |
Correct |
65 ms |
19904 KB |
Output is correct |
69 |
Correct |
78 ms |
25280 KB |
Output is correct |
70 |
Correct |
163 ms |
29632 KB |
Output is correct |
71 |
Correct |
92 ms |
25796 KB |
Output is correct |
72 |
Correct |
106 ms |
26048 KB |
Output is correct |
73 |
Correct |
111 ms |
28112 KB |
Output is correct |
74 |
Correct |
128 ms |
27324 KB |
Output is correct |
75 |
Correct |
123 ms |
27316 KB |
Output is correct |