#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define ll long long
#define fi first
#define se second
#define pb push_back
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template <class T>
using Tree = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int nax=1e3+5;
signed main(){
iostream::sync_with_stdio(false);
cin.tie(0);
int n;
cin>>n;
int tab[n];
int dp[n][n];
memset(dp,0,sizeof dp);
for (int i = 0; i < n; ++i)
{
cin>>tab[i];
}
for (int i = n-3; i >= 0; i--)
{
int mx=tab[i+1];
for (int j = i+2; j < n; ++j)
{
dp[i][j]=max(dp[i][j],max(dp[i+1][j],dp[i][j-1]));
dp[i][j]=max(dp[i][j],tab[i]+tab[j]+mx);
//cout <<i<<" "<<j<<" "<<dp[i][j]<<endl;
mx=max(mx,tab[i+(j-i+1)/2]);
}
}
int q;
cin>>q;
while(q--){
int x,y;
cin>>x>>y;
x--;y--;
cout <<dp[x][y]<<endl;
}
}
# |
Verdict |
Execution time |
Memory |
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 |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
464 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
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 |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
464 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
700 ms |
107880 KB |
Output is correct |
12 |
Correct |
718 ms |
107884 KB |
Output is correct |
13 |
Correct |
691 ms |
107856 KB |
Output is correct |
14 |
Correct |
701 ms |
107884 KB |
Output is correct |
15 |
Correct |
668 ms |
107812 KB |
Output is correct |
16 |
Correct |
729 ms |
107180 KB |
Output is correct |
17 |
Correct |
720 ms |
107112 KB |
Output is correct |
18 |
Correct |
691 ms |
107272 KB |
Output is correct |
19 |
Correct |
680 ms |
107832 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
236 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
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 |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
1 ms |
464 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
700 ms |
107880 KB |
Output is correct |
12 |
Correct |
718 ms |
107884 KB |
Output is correct |
13 |
Correct |
691 ms |
107856 KB |
Output is correct |
14 |
Correct |
701 ms |
107884 KB |
Output is correct |
15 |
Correct |
668 ms |
107812 KB |
Output is correct |
16 |
Correct |
729 ms |
107180 KB |
Output is correct |
17 |
Correct |
720 ms |
107112 KB |
Output is correct |
18 |
Correct |
691 ms |
107272 KB |
Output is correct |
19 |
Correct |
680 ms |
107832 KB |
Output is correct |
20 |
Runtime error |
236 ms |
524288 KB |
Execution killed with signal 9 |
21 |
Halted |
0 ms |
0 KB |
- |