#include <bits/stdc++.h>
using namespace std;
#define fi first
#define sc second
const int MAXN = 505;
int dp[MAXN][MAXN], d[MAXN], sp[MAXN];
int sum(int i, int j){
return sp[j] - sp[i-1];
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n; cin>>n;
for(int i = 1; i <= n; i++){
cin>>d[i];
sp[i] = sp[i-1]+d[i];
}
int ans = 0;
for(int r = n-1; r >= 1; r--){
set<pair<int,int>> st;
for(int j = r+1; j < n; j++)st.insert({sum(r+1,j), dp[r+1][j+1]});
int qtd = 0;
for(int l = r; l >= 1; l--){
dp[l][r] = max(dp[l+1][r], dp[l][r+1]);
if(l!=r){
auto it = st.lower_bound({sum(l+1,r),0});
if(it == st.end() || it->fi > sum(l+1,r))continue;
qtd++;
dp[l][r] = max(dp[l][r], (it->sc) + qtd);
}
ans = max(ans,dp[l][r]);
}
}
cout<<ans<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
14 |
Correct |
0 ms |
604 KB |
Output is correct |
15 |
Correct |
0 ms |
604 KB |
Output is correct |
16 |
Correct |
0 ms |
604 KB |
Output is correct |
17 |
Correct |
1 ms |
604 KB |
Output is correct |
18 |
Correct |
0 ms |
604 KB |
Output is correct |
19 |
Correct |
0 ms |
604 KB |
Output is correct |
20 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
1372 KB |
Output is correct |
2 |
Correct |
7 ms |
1468 KB |
Output is correct |
3 |
Correct |
7 ms |
1372 KB |
Output is correct |
4 |
Correct |
7 ms |
1372 KB |
Output is correct |
5 |
Correct |
7 ms |
1464 KB |
Output is correct |
6 |
Correct |
7 ms |
1232 KB |
Output is correct |
7 |
Correct |
7 ms |
1472 KB |
Output is correct |
8 |
Correct |
7 ms |
1368 KB |
Output is correct |
9 |
Correct |
8 ms |
1368 KB |
Output is correct |
10 |
Correct |
7 ms |
1372 KB |
Output is correct |
11 |
Correct |
7 ms |
1476 KB |
Output is correct |
12 |
Correct |
11 ms |
1884 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
14 |
Correct |
0 ms |
604 KB |
Output is correct |
15 |
Correct |
0 ms |
604 KB |
Output is correct |
16 |
Correct |
0 ms |
604 KB |
Output is correct |
17 |
Correct |
1 ms |
604 KB |
Output is correct |
18 |
Correct |
0 ms |
604 KB |
Output is correct |
19 |
Correct |
0 ms |
604 KB |
Output is correct |
20 |
Correct |
1 ms |
604 KB |
Output is correct |
21 |
Correct |
7 ms |
1372 KB |
Output is correct |
22 |
Correct |
7 ms |
1468 KB |
Output is correct |
23 |
Correct |
7 ms |
1372 KB |
Output is correct |
24 |
Correct |
7 ms |
1372 KB |
Output is correct |
25 |
Correct |
7 ms |
1464 KB |
Output is correct |
26 |
Correct |
7 ms |
1232 KB |
Output is correct |
27 |
Correct |
7 ms |
1472 KB |
Output is correct |
28 |
Correct |
7 ms |
1368 KB |
Output is correct |
29 |
Correct |
8 ms |
1368 KB |
Output is correct |
30 |
Correct |
7 ms |
1372 KB |
Output is correct |
31 |
Correct |
7 ms |
1476 KB |
Output is correct |
32 |
Correct |
11 ms |
1884 KB |
Output is correct |
33 |
Correct |
7 ms |
1372 KB |
Output is correct |
34 |
Correct |
7 ms |
1368 KB |
Output is correct |
35 |
Correct |
7 ms |
1468 KB |
Output is correct |
36 |
Correct |
7 ms |
1372 KB |
Output is correct |
37 |
Correct |
7 ms |
1372 KB |
Output is correct |
38 |
Correct |
10 ms |
1472 KB |
Output is correct |
39 |
Correct |
7 ms |
1372 KB |
Output is correct |
40 |
Correct |
8 ms |
1468 KB |
Output is correct |
41 |
Correct |
7 ms |
1232 KB |
Output is correct |
42 |
Correct |
7 ms |
1372 KB |
Output is correct |
43 |
Correct |
6 ms |
1368 KB |
Output is correct |
44 |
Correct |
7 ms |
1476 KB |
Output is correct |
45 |
Correct |
7 ms |
1228 KB |
Output is correct |
46 |
Correct |
7 ms |
1372 KB |
Output is correct |
47 |
Correct |
7 ms |
1372 KB |
Output is correct |
48 |
Correct |
7 ms |
1372 KB |
Output is correct |
49 |
Correct |
6 ms |
1368 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
14 |
Correct |
0 ms |
604 KB |
Output is correct |
15 |
Correct |
0 ms |
604 KB |
Output is correct |
16 |
Correct |
0 ms |
604 KB |
Output is correct |
17 |
Correct |
1 ms |
604 KB |
Output is correct |
18 |
Correct |
0 ms |
604 KB |
Output is correct |
19 |
Correct |
0 ms |
604 KB |
Output is correct |
20 |
Correct |
1 ms |
604 KB |
Output is correct |
21 |
Correct |
7 ms |
1372 KB |
Output is correct |
22 |
Correct |
7 ms |
1468 KB |
Output is correct |
23 |
Correct |
7 ms |
1372 KB |
Output is correct |
24 |
Correct |
7 ms |
1372 KB |
Output is correct |
25 |
Correct |
7 ms |
1464 KB |
Output is correct |
26 |
Correct |
7 ms |
1232 KB |
Output is correct |
27 |
Correct |
7 ms |
1472 KB |
Output is correct |
28 |
Correct |
7 ms |
1368 KB |
Output is correct |
29 |
Correct |
8 ms |
1368 KB |
Output is correct |
30 |
Correct |
7 ms |
1372 KB |
Output is correct |
31 |
Correct |
7 ms |
1476 KB |
Output is correct |
32 |
Correct |
11 ms |
1884 KB |
Output is correct |
33 |
Correct |
7 ms |
1372 KB |
Output is correct |
34 |
Correct |
7 ms |
1368 KB |
Output is correct |
35 |
Correct |
7 ms |
1468 KB |
Output is correct |
36 |
Correct |
7 ms |
1372 KB |
Output is correct |
37 |
Correct |
7 ms |
1372 KB |
Output is correct |
38 |
Correct |
10 ms |
1472 KB |
Output is correct |
39 |
Correct |
7 ms |
1372 KB |
Output is correct |
40 |
Correct |
8 ms |
1468 KB |
Output is correct |
41 |
Correct |
7 ms |
1232 KB |
Output is correct |
42 |
Correct |
7 ms |
1372 KB |
Output is correct |
43 |
Correct |
6 ms |
1368 KB |
Output is correct |
44 |
Correct |
7 ms |
1476 KB |
Output is correct |
45 |
Correct |
7 ms |
1228 KB |
Output is correct |
46 |
Correct |
7 ms |
1372 KB |
Output is correct |
47 |
Correct |
7 ms |
1372 KB |
Output is correct |
48 |
Correct |
7 ms |
1372 KB |
Output is correct |
49 |
Correct |
6 ms |
1368 KB |
Output is correct |
50 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 11 |
51 |
Halted |
0 ms |
0 KB |
- |