#include<bits/stdc++.h>
using namespace std;
const int N=5005;
int sp[13][N],dp[N][N];
void build(int n){
for(int j=1;j<13;j++){
for(int i=0;i+(1<<j)<=n;i++){
sp[j][i]=max(sp[j-1][i],sp[j-1][i+(1<<(j-1))]);
}
}
}
int RMQ(int l,int r){
int sz=__lg(r-l+1);
return max(sp[sz][l],sp[sz][r-(1<<sz)+1]);
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin>>n;
for(int i=0;i<n;i++)cin>>sp[0][i];
build(n);
for(int sz=2;sz<n;sz++){
for(int i=0;i+sz<n;i++){
dp[i][i+sz]=sp[0][i]+sp[0][i+sz]+RMQ(i+1,(i+sz+i)/2);
dp[i][i+sz]=max({dp[i][i+sz],dp[i+1][i+sz],dp[i][i+sz-1]});
}
}
int q;
cin>>q;
while(q--){
int l,r;
cin>>l>>r;
l--;r--;
cout<<dp[l][r]<<"\n";
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
736 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
724 KB |
Output is correct |
5 |
Correct |
1 ms |
724 KB |
Output is correct |
6 |
Correct |
1 ms |
724 KB |
Output is correct |
7 |
Correct |
1 ms |
724 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
724 KB |
Output is correct |
10 |
Correct |
1 ms |
724 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
736 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
724 KB |
Output is correct |
5 |
Correct |
1 ms |
724 KB |
Output is correct |
6 |
Correct |
1 ms |
724 KB |
Output is correct |
7 |
Correct |
1 ms |
724 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
724 KB |
Output is correct |
10 |
Correct |
1 ms |
724 KB |
Output is correct |
11 |
Correct |
315 ms |
77192 KB |
Output is correct |
12 |
Correct |
318 ms |
77092 KB |
Output is correct |
13 |
Correct |
310 ms |
77192 KB |
Output is correct |
14 |
Correct |
352 ms |
77132 KB |
Output is correct |
15 |
Correct |
334 ms |
77188 KB |
Output is correct |
16 |
Correct |
340 ms |
76548 KB |
Output is correct |
17 |
Correct |
339 ms |
76520 KB |
Output is correct |
18 |
Correct |
319 ms |
76452 KB |
Output is correct |
19 |
Correct |
353 ms |
76992 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
9 ms |
1748 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
736 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
724 KB |
Output is correct |
5 |
Correct |
1 ms |
724 KB |
Output is correct |
6 |
Correct |
1 ms |
724 KB |
Output is correct |
7 |
Correct |
1 ms |
724 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
724 KB |
Output is correct |
10 |
Correct |
1 ms |
724 KB |
Output is correct |
11 |
Correct |
315 ms |
77192 KB |
Output is correct |
12 |
Correct |
318 ms |
77092 KB |
Output is correct |
13 |
Correct |
310 ms |
77192 KB |
Output is correct |
14 |
Correct |
352 ms |
77132 KB |
Output is correct |
15 |
Correct |
334 ms |
77188 KB |
Output is correct |
16 |
Correct |
340 ms |
76548 KB |
Output is correct |
17 |
Correct |
339 ms |
76520 KB |
Output is correct |
18 |
Correct |
319 ms |
76452 KB |
Output is correct |
19 |
Correct |
353 ms |
76992 KB |
Output is correct |
20 |
Runtime error |
9 ms |
1748 KB |
Execution killed with signal 11 |
21 |
Halted |
0 ms |
0 KB |
- |