#include <bits/stdc++.h>
using namespace std;
const int inf = 5009;
int n,a[inf],dp[inf][inf],mx[inf],ans;
vector<pair<int,int> > v[inf];
int get(vector<pair<int,int> > &cur,int ub){
// int ret = 0;
// for(auto o:cur)
// if(o.first <= ub)
// ret = max(ret,o.second);
// return ret;
int idx = lower_bound(cur.begin(),cur.end(),make_pair(ub+1,-1))-cur.begin();
if(idx-1 >=0 && cur[idx-1].first <= ub)
return cur[idx-1].second;
return 0;
}
int main(){
cin>>n;
for(int i=1;i<=n;i++)
cin>>a[i];
for(int i=1;i<n;i++){
int l = i,sum1 = a[l],sum2 = 0,cur = 0;
for(int r = i+1;r<n;r++){
sum2 += a[r];
while(l>1 && sum1 + a[l-1] <= sum2)
sum1 += a[l-1],l--;
if(sum1 == sum2)cur++;
dp[i][r+1] = dp[i][r];
int mx = 0;
if(l != 1)
mx = get(v[i],l-2),dp[i][r+1] = max(dp[i][r+1],mx + cur);
pair<int,int> tmp = (v[r+1].empty()?make_pair(0,0):v[r+1].back());
tmp.first = i,tmp.second = max(tmp.second,dp[i][r+1]);
v[r+1].push_back(tmp);
ans = max(ans,dp[i][r+1]);
}
}
cout<<ans<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
460 KB |
Output is correct |
3 |
Correct |
1 ms |
460 KB |
Output is correct |
4 |
Correct |
1 ms |
460 KB |
Output is correct |
5 |
Correct |
1 ms |
460 KB |
Output is correct |
6 |
Correct |
1 ms |
460 KB |
Output is correct |
7 |
Correct |
1 ms |
412 KB |
Output is correct |
8 |
Correct |
1 ms |
460 KB |
Output is correct |
9 |
Correct |
1 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
460 KB |
Output is correct |
3 |
Correct |
1 ms |
460 KB |
Output is correct |
4 |
Correct |
1 ms |
460 KB |
Output is correct |
5 |
Correct |
1 ms |
460 KB |
Output is correct |
6 |
Correct |
1 ms |
460 KB |
Output is correct |
7 |
Correct |
1 ms |
412 KB |
Output is correct |
8 |
Correct |
1 ms |
460 KB |
Output is correct |
9 |
Correct |
1 ms |
460 KB |
Output is correct |
10 |
Correct |
1 ms |
716 KB |
Output is correct |
11 |
Correct |
1 ms |
716 KB |
Output is correct |
12 |
Correct |
1 ms |
716 KB |
Output is correct |
13 |
Correct |
1 ms |
716 KB |
Output is correct |
14 |
Correct |
1 ms |
716 KB |
Output is correct |
15 |
Correct |
1 ms |
716 KB |
Output is correct |
16 |
Correct |
1 ms |
716 KB |
Output is correct |
17 |
Correct |
1 ms |
716 KB |
Output is correct |
18 |
Correct |
1 ms |
716 KB |
Output is correct |
19 |
Correct |
1 ms |
716 KB |
Output is correct |
20 |
Correct |
1 ms |
716 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4172 KB |
Output is correct |
2 |
Correct |
7 ms |
4172 KB |
Output is correct |
3 |
Correct |
8 ms |
4260 KB |
Output is correct |
4 |
Correct |
7 ms |
4172 KB |
Output is correct |
5 |
Correct |
8 ms |
4172 KB |
Output is correct |
6 |
Correct |
8 ms |
4172 KB |
Output is correct |
7 |
Correct |
8 ms |
4172 KB |
Output is correct |
8 |
Correct |
8 ms |
4252 KB |
Output is correct |
9 |
Correct |
8 ms |
4172 KB |
Output is correct |
10 |
Correct |
7 ms |
4172 KB |
Output is correct |
11 |
Correct |
9 ms |
4172 KB |
Output is correct |
12 |
Correct |
7 ms |
4172 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
460 KB |
Output is correct |
3 |
Correct |
1 ms |
460 KB |
Output is correct |
4 |
Correct |
1 ms |
460 KB |
Output is correct |
5 |
Correct |
1 ms |
460 KB |
Output is correct |
6 |
Correct |
1 ms |
460 KB |
Output is correct |
7 |
Correct |
1 ms |
412 KB |
Output is correct |
8 |
Correct |
1 ms |
460 KB |
Output is correct |
9 |
Correct |
1 ms |
460 KB |
Output is correct |
10 |
Correct |
1 ms |
716 KB |
Output is correct |
11 |
Correct |
1 ms |
716 KB |
Output is correct |
12 |
Correct |
1 ms |
716 KB |
Output is correct |
13 |
Correct |
1 ms |
716 KB |
Output is correct |
14 |
Correct |
1 ms |
716 KB |
Output is correct |
15 |
Correct |
1 ms |
716 KB |
Output is correct |
16 |
Correct |
1 ms |
716 KB |
Output is correct |
17 |
Correct |
1 ms |
716 KB |
Output is correct |
18 |
Correct |
1 ms |
716 KB |
Output is correct |
19 |
Correct |
1 ms |
716 KB |
Output is correct |
20 |
Correct |
1 ms |
716 KB |
Output is correct |
21 |
Correct |
7 ms |
4172 KB |
Output is correct |
22 |
Correct |
7 ms |
4172 KB |
Output is correct |
23 |
Correct |
8 ms |
4260 KB |
Output is correct |
24 |
Correct |
7 ms |
4172 KB |
Output is correct |
25 |
Correct |
8 ms |
4172 KB |
Output is correct |
26 |
Correct |
8 ms |
4172 KB |
Output is correct |
27 |
Correct |
8 ms |
4172 KB |
Output is correct |
28 |
Correct |
8 ms |
4252 KB |
Output is correct |
29 |
Correct |
8 ms |
4172 KB |
Output is correct |
30 |
Correct |
7 ms |
4172 KB |
Output is correct |
31 |
Correct |
9 ms |
4172 KB |
Output is correct |
32 |
Correct |
7 ms |
4172 KB |
Output is correct |
33 |
Correct |
7 ms |
4252 KB |
Output is correct |
34 |
Correct |
9 ms |
4172 KB |
Output is correct |
35 |
Correct |
8 ms |
4172 KB |
Output is correct |
36 |
Correct |
8 ms |
4172 KB |
Output is correct |
37 |
Correct |
8 ms |
4224 KB |
Output is correct |
38 |
Correct |
8 ms |
4172 KB |
Output is correct |
39 |
Correct |
8 ms |
4172 KB |
Output is correct |
40 |
Correct |
8 ms |
4164 KB |
Output is correct |
41 |
Correct |
8 ms |
4192 KB |
Output is correct |
42 |
Correct |
8 ms |
4172 KB |
Output is correct |
43 |
Correct |
7 ms |
4172 KB |
Output is correct |
44 |
Correct |
8 ms |
4192 KB |
Output is correct |
45 |
Correct |
7 ms |
4172 KB |
Output is correct |
46 |
Correct |
7 ms |
4256 KB |
Output is correct |
47 |
Correct |
8 ms |
4172 KB |
Output is correct |
48 |
Correct |
7 ms |
4172 KB |
Output is correct |
49 |
Correct |
8 ms |
4172 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
460 KB |
Output is correct |
3 |
Correct |
1 ms |
460 KB |
Output is correct |
4 |
Correct |
1 ms |
460 KB |
Output is correct |
5 |
Correct |
1 ms |
460 KB |
Output is correct |
6 |
Correct |
1 ms |
460 KB |
Output is correct |
7 |
Correct |
1 ms |
412 KB |
Output is correct |
8 |
Correct |
1 ms |
460 KB |
Output is correct |
9 |
Correct |
1 ms |
460 KB |
Output is correct |
10 |
Correct |
1 ms |
716 KB |
Output is correct |
11 |
Correct |
1 ms |
716 KB |
Output is correct |
12 |
Correct |
1 ms |
716 KB |
Output is correct |
13 |
Correct |
1 ms |
716 KB |
Output is correct |
14 |
Correct |
1 ms |
716 KB |
Output is correct |
15 |
Correct |
1 ms |
716 KB |
Output is correct |
16 |
Correct |
1 ms |
716 KB |
Output is correct |
17 |
Correct |
1 ms |
716 KB |
Output is correct |
18 |
Correct |
1 ms |
716 KB |
Output is correct |
19 |
Correct |
1 ms |
716 KB |
Output is correct |
20 |
Correct |
1 ms |
716 KB |
Output is correct |
21 |
Correct |
7 ms |
4172 KB |
Output is correct |
22 |
Correct |
7 ms |
4172 KB |
Output is correct |
23 |
Correct |
8 ms |
4260 KB |
Output is correct |
24 |
Correct |
7 ms |
4172 KB |
Output is correct |
25 |
Correct |
8 ms |
4172 KB |
Output is correct |
26 |
Correct |
8 ms |
4172 KB |
Output is correct |
27 |
Correct |
8 ms |
4172 KB |
Output is correct |
28 |
Correct |
8 ms |
4252 KB |
Output is correct |
29 |
Correct |
8 ms |
4172 KB |
Output is correct |
30 |
Correct |
7 ms |
4172 KB |
Output is correct |
31 |
Correct |
9 ms |
4172 KB |
Output is correct |
32 |
Correct |
7 ms |
4172 KB |
Output is correct |
33 |
Correct |
7 ms |
4252 KB |
Output is correct |
34 |
Correct |
9 ms |
4172 KB |
Output is correct |
35 |
Correct |
8 ms |
4172 KB |
Output is correct |
36 |
Correct |
8 ms |
4172 KB |
Output is correct |
37 |
Correct |
8 ms |
4224 KB |
Output is correct |
38 |
Correct |
8 ms |
4172 KB |
Output is correct |
39 |
Correct |
8 ms |
4172 KB |
Output is correct |
40 |
Correct |
8 ms |
4164 KB |
Output is correct |
41 |
Correct |
8 ms |
4192 KB |
Output is correct |
42 |
Correct |
8 ms |
4172 KB |
Output is correct |
43 |
Correct |
7 ms |
4172 KB |
Output is correct |
44 |
Correct |
8 ms |
4192 KB |
Output is correct |
45 |
Correct |
7 ms |
4172 KB |
Output is correct |
46 |
Correct |
7 ms |
4256 KB |
Output is correct |
47 |
Correct |
8 ms |
4172 KB |
Output is correct |
48 |
Correct |
7 ms |
4172 KB |
Output is correct |
49 |
Correct |
8 ms |
4172 KB |
Output is correct |
50 |
Correct |
805 ms |
197028 KB |
Output is correct |
51 |
Correct |
803 ms |
197008 KB |
Output is correct |
52 |
Correct |
854 ms |
197176 KB |
Output is correct |
53 |
Correct |
808 ms |
196964 KB |
Output is correct |
54 |
Correct |
806 ms |
197036 KB |
Output is correct |
55 |
Correct |
797 ms |
196984 KB |
Output is correct |
56 |
Correct |
823 ms |
196920 KB |
Output is correct |
57 |
Correct |
805 ms |
197000 KB |
Output is correct |
58 |
Correct |
837 ms |
196944 KB |
Output is correct |
59 |
Correct |
801 ms |
197064 KB |
Output is correct |
60 |
Correct |
817 ms |
196972 KB |
Output is correct |
61 |
Correct |
794 ms |
197112 KB |
Output is correct |
62 |
Correct |
792 ms |
196984 KB |
Output is correct |
63 |
Correct |
799 ms |
197080 KB |
Output is correct |
64 |
Correct |
864 ms |
196956 KB |
Output is correct |
65 |
Correct |
838 ms |
196960 KB |
Output is correct |
66 |
Correct |
838 ms |
196944 KB |
Output is correct |
67 |
Correct |
863 ms |
196920 KB |
Output is correct |
68 |
Correct |
854 ms |
197020 KB |
Output is correct |
69 |
Correct |
844 ms |
196932 KB |
Output is correct |
70 |
Correct |
856 ms |
196976 KB |
Output is correct |
71 |
Correct |
868 ms |
196984 KB |
Output is correct |
72 |
Correct |
839 ms |
197064 KB |
Output is correct |