#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int MAXN = 1e5+5;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define pb push_back
#define fr first
#define sc second
int n, v[5005], dp[5005][5005], max_dp[5005][5005], pref[5005]; // max_dp[i][j] = max{dp[1][j], dp[2][j], ..., dp[i][j]}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for(int i = 1; i <= n; i++)
cin >> v[i], pref[i] = pref[i-1] + v[i];
// l ... r
// l-1 ... k
for(int l = 1; l <= n; l++) {
dp[l][l] = max_dp[l-1][l-1];
int cnt = 0;
for(int r = l, k = l-1; r <= n; r++) {
if(r > l) dp[l][r] = dp[l][r-1];
if(k >= 1) dp[l][r] = max(dp[l][r], max_dp[k][l-1] + cnt);
while(k >= 1 and pref[l-1] - pref[k-1] < pref[r] - pref[l-1]) k--;
if(k >= 1 and pref[l-1] - pref[k-1] == pref[r] - pref[l-1]) cnt++, k--;
}
for(int k = 1; k <= l; k++)
max_dp[k][l] = max(dp[k][l], max_dp[k-1][l]);
}
cout << max_dp[n][n] << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
604 KB |
Output is correct |
2 |
Correct |
0 ms |
604 KB |
Output is correct |
3 |
Correct |
0 ms |
604 KB |
Output is correct |
4 |
Correct |
0 ms |
604 KB |
Output is correct |
5 |
Correct |
0 ms |
604 KB |
Output is correct |
6 |
Correct |
0 ms |
604 KB |
Output is correct |
7 |
Correct |
0 ms |
604 KB |
Output is correct |
8 |
Correct |
0 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
604 KB |
Output is correct |
2 |
Correct |
0 ms |
604 KB |
Output is correct |
3 |
Correct |
0 ms |
604 KB |
Output is correct |
4 |
Correct |
0 ms |
604 KB |
Output is correct |
5 |
Correct |
0 ms |
604 KB |
Output is correct |
6 |
Correct |
0 ms |
604 KB |
Output is correct |
7 |
Correct |
0 ms |
604 KB |
Output is correct |
8 |
Correct |
0 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
984 KB |
Output is correct |
12 |
Correct |
0 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
0 ms |
1116 KB |
Output is correct |
16 |
Correct |
0 ms |
1116 KB |
Output is correct |
17 |
Correct |
0 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
0 ms |
1116 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
5468 KB |
Output is correct |
2 |
Correct |
2 ms |
5468 KB |
Output is correct |
3 |
Correct |
2 ms |
5468 KB |
Output is correct |
4 |
Correct |
2 ms |
5332 KB |
Output is correct |
5 |
Correct |
2 ms |
5316 KB |
Output is correct |
6 |
Correct |
2 ms |
5464 KB |
Output is correct |
7 |
Correct |
3 ms |
5464 KB |
Output is correct |
8 |
Correct |
4 ms |
5468 KB |
Output is correct |
9 |
Correct |
4 ms |
5468 KB |
Output is correct |
10 |
Correct |
2 ms |
5468 KB |
Output is correct |
11 |
Correct |
2 ms |
5468 KB |
Output is correct |
12 |
Correct |
2 ms |
5468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
604 KB |
Output is correct |
2 |
Correct |
0 ms |
604 KB |
Output is correct |
3 |
Correct |
0 ms |
604 KB |
Output is correct |
4 |
Correct |
0 ms |
604 KB |
Output is correct |
5 |
Correct |
0 ms |
604 KB |
Output is correct |
6 |
Correct |
0 ms |
604 KB |
Output is correct |
7 |
Correct |
0 ms |
604 KB |
Output is correct |
8 |
Correct |
0 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
984 KB |
Output is correct |
12 |
Correct |
0 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
0 ms |
1116 KB |
Output is correct |
16 |
Correct |
0 ms |
1116 KB |
Output is correct |
17 |
Correct |
0 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
0 ms |
1116 KB |
Output is correct |
21 |
Correct |
2 ms |
5468 KB |
Output is correct |
22 |
Correct |
2 ms |
5468 KB |
Output is correct |
23 |
Correct |
2 ms |
5468 KB |
Output is correct |
24 |
Correct |
2 ms |
5332 KB |
Output is correct |
25 |
Correct |
2 ms |
5316 KB |
Output is correct |
26 |
Correct |
2 ms |
5464 KB |
Output is correct |
27 |
Correct |
3 ms |
5464 KB |
Output is correct |
28 |
Correct |
4 ms |
5468 KB |
Output is correct |
29 |
Correct |
4 ms |
5468 KB |
Output is correct |
30 |
Correct |
2 ms |
5468 KB |
Output is correct |
31 |
Correct |
2 ms |
5468 KB |
Output is correct |
32 |
Correct |
2 ms |
5468 KB |
Output is correct |
33 |
Correct |
2 ms |
5484 KB |
Output is correct |
34 |
Correct |
2 ms |
5468 KB |
Output is correct |
35 |
Correct |
2 ms |
5468 KB |
Output is correct |
36 |
Correct |
2 ms |
5468 KB |
Output is correct |
37 |
Correct |
3 ms |
5468 KB |
Output is correct |
38 |
Correct |
3 ms |
5464 KB |
Output is correct |
39 |
Correct |
3 ms |
5468 KB |
Output is correct |
40 |
Correct |
3 ms |
5328 KB |
Output is correct |
41 |
Correct |
4 ms |
5468 KB |
Output is correct |
42 |
Correct |
3 ms |
5468 KB |
Output is correct |
43 |
Correct |
2 ms |
5468 KB |
Output is correct |
44 |
Correct |
3 ms |
5468 KB |
Output is correct |
45 |
Correct |
3 ms |
5264 KB |
Output is correct |
46 |
Correct |
3 ms |
5464 KB |
Output is correct |
47 |
Correct |
3 ms |
5392 KB |
Output is correct |
48 |
Correct |
3 ms |
5464 KB |
Output is correct |
49 |
Correct |
2 ms |
5468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
604 KB |
Output is correct |
2 |
Correct |
0 ms |
604 KB |
Output is correct |
3 |
Correct |
0 ms |
604 KB |
Output is correct |
4 |
Correct |
0 ms |
604 KB |
Output is correct |
5 |
Correct |
0 ms |
604 KB |
Output is correct |
6 |
Correct |
0 ms |
604 KB |
Output is correct |
7 |
Correct |
0 ms |
604 KB |
Output is correct |
8 |
Correct |
0 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
984 KB |
Output is correct |
12 |
Correct |
0 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
0 ms |
1116 KB |
Output is correct |
16 |
Correct |
0 ms |
1116 KB |
Output is correct |
17 |
Correct |
0 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1116 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
0 ms |
1116 KB |
Output is correct |
21 |
Correct |
2 ms |
5468 KB |
Output is correct |
22 |
Correct |
2 ms |
5468 KB |
Output is correct |
23 |
Correct |
2 ms |
5468 KB |
Output is correct |
24 |
Correct |
2 ms |
5332 KB |
Output is correct |
25 |
Correct |
2 ms |
5316 KB |
Output is correct |
26 |
Correct |
2 ms |
5464 KB |
Output is correct |
27 |
Correct |
3 ms |
5464 KB |
Output is correct |
28 |
Correct |
4 ms |
5468 KB |
Output is correct |
29 |
Correct |
4 ms |
5468 KB |
Output is correct |
30 |
Correct |
2 ms |
5468 KB |
Output is correct |
31 |
Correct |
2 ms |
5468 KB |
Output is correct |
32 |
Correct |
2 ms |
5468 KB |
Output is correct |
33 |
Correct |
2 ms |
5484 KB |
Output is correct |
34 |
Correct |
2 ms |
5468 KB |
Output is correct |
35 |
Correct |
2 ms |
5468 KB |
Output is correct |
36 |
Correct |
2 ms |
5468 KB |
Output is correct |
37 |
Correct |
3 ms |
5468 KB |
Output is correct |
38 |
Correct |
3 ms |
5464 KB |
Output is correct |
39 |
Correct |
3 ms |
5468 KB |
Output is correct |
40 |
Correct |
3 ms |
5328 KB |
Output is correct |
41 |
Correct |
4 ms |
5468 KB |
Output is correct |
42 |
Correct |
3 ms |
5468 KB |
Output is correct |
43 |
Correct |
2 ms |
5468 KB |
Output is correct |
44 |
Correct |
3 ms |
5468 KB |
Output is correct |
45 |
Correct |
3 ms |
5264 KB |
Output is correct |
46 |
Correct |
3 ms |
5464 KB |
Output is correct |
47 |
Correct |
3 ms |
5392 KB |
Output is correct |
48 |
Correct |
3 ms |
5464 KB |
Output is correct |
49 |
Correct |
2 ms |
5468 KB |
Output is correct |
50 |
Correct |
153 ms |
134228 KB |
Output is correct |
51 |
Correct |
149 ms |
134224 KB |
Output is correct |
52 |
Correct |
166 ms |
134224 KB |
Output is correct |
53 |
Correct |
163 ms |
134436 KB |
Output is correct |
54 |
Correct |
191 ms |
134372 KB |
Output is correct |
55 |
Correct |
155 ms |
134224 KB |
Output is correct |
56 |
Correct |
176 ms |
134324 KB |
Output is correct |
57 |
Correct |
174 ms |
134224 KB |
Output is correct |
58 |
Correct |
192 ms |
134340 KB |
Output is correct |
59 |
Correct |
187 ms |
134224 KB |
Output is correct |
60 |
Correct |
182 ms |
134228 KB |
Output is correct |
61 |
Correct |
169 ms |
134228 KB |
Output is correct |
62 |
Correct |
153 ms |
134228 KB |
Output is correct |
63 |
Correct |
153 ms |
134228 KB |
Output is correct |
64 |
Correct |
155 ms |
134224 KB |
Output is correct |
65 |
Correct |
172 ms |
134448 KB |
Output is correct |
66 |
Correct |
195 ms |
134416 KB |
Output is correct |
67 |
Correct |
154 ms |
134228 KB |
Output is correct |
68 |
Correct |
162 ms |
134260 KB |
Output is correct |
69 |
Correct |
147 ms |
134224 KB |
Output is correct |
70 |
Correct |
175 ms |
134224 KB |
Output is correct |
71 |
Correct |
192 ms |
134596 KB |
Output is correct |
72 |
Correct |
177 ms |
134220 KB |
Output is correct |