#include <bits/stdc++.h>
#define int long long
using namespace std;
int N,Q,A[500000],L,R,ANS[500000];
int S1[2000000],S2[2000000],S3[2000000];
vector<pair<int,int>>PA[500000];
void upd(int T,int v,int LL = 0,int RR = 500000,int idx = 0){
if(LL == RR && LL == T){
S1[idx] = max(v,S1[idx]);
S2[idx] = A[T];
S3[idx] = S1[idx] + A[T];
return;
}
else if(LL > T || RR < T)return;
upd(T,v,LL,(LL+RR)/2,idx*2+1),upd(T,v,(LL+RR)/2+1,RR,idx*2+2);
S3[idx] = max({S3[idx*2+1],S3[idx*2+2],S1[idx*2+1] + S2[idx*2+2]});
S1[idx] = max(S1[idx*2+1],S1[idx*2+2]);
S2[idx] = max(S2[idx*2+1],S2[idx*2+2]);
}
int query(int L,int R,int LL=0,int RR=500000,int idx=0){
if(RR <= R && LL >= L){
return S3[idx];
}
else if(LL > R || RR < L)return (int)-3e8;
return max(query(L,R,LL,(LL+RR)/2,idx*2+1),query(L,R,(LL+RR)/2+1,RR,idx*2+2));
}
void CALC(){
stack<pair<int,int>>F;
for(int i = 0; i < N; i += 1){
while(F.size()){
pair<int,int>TOP = F.top();
PA[TOP.second].push_back({i, i * 2 - TOP.second});
if(TOP.first > A[i])break;
F.pop();
}
F.push({A[i],i});
}
}
int32_t main()
{
cin.tie(0),iostream::sync_with_stdio(0);
cin>>N;
for(int i = 0; i < N; i += 1){
cin>>A[i];
upd(i,0);
}
CALC();
cin>>Q;
vector<array<int,3>>STO;
for(int i = 0; i < Q; i += 1){
cin>>L>>R,L--,R--;
STO.push_back({L,R,i});
}
int LST = N;
sort(STO.rbegin(),STO.rend());
for(int i = 0; i < Q; i += 1){
while(LST > STO[i][0]){
LST--;
for(int l = 0; l < PA[LST].size();l++){
for(int z = PA[LST][l].second; z < 5000; z++)
upd(z,A[PA[LST][l].first] + A[LST]);
}
}
//cout<<STO[i][1]<<endl;
ANS[STO[i][2]] = query(STO[i][0],STO[i][1]);
}
for(int i = 0; i < Q; i += 1)cout<<ANS[i]<<'\n';
}
Compilation message
jumps.cpp: In function 'int32_t main()':
jumps.cpp:59:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for(int l = 0; l < PA[LST].size();l++){
| ~~^~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
12372 KB |
Output is correct |
2 |
Correct |
203 ms |
12476 KB |
Output is correct |
3 |
Correct |
107 ms |
12480 KB |
Output is correct |
4 |
Correct |
108 ms |
12372 KB |
Output is correct |
5 |
Correct |
246 ms |
12480 KB |
Output is correct |
6 |
Correct |
198 ms |
12480 KB |
Output is correct |
7 |
Correct |
201 ms |
12372 KB |
Output is correct |
8 |
Correct |
207 ms |
12372 KB |
Output is correct |
9 |
Correct |
205 ms |
12492 KB |
Output is correct |
10 |
Correct |
201 ms |
12468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
12372 KB |
Output is correct |
2 |
Correct |
203 ms |
12476 KB |
Output is correct |
3 |
Correct |
107 ms |
12480 KB |
Output is correct |
4 |
Correct |
108 ms |
12372 KB |
Output is correct |
5 |
Correct |
246 ms |
12480 KB |
Output is correct |
6 |
Correct |
198 ms |
12480 KB |
Output is correct |
7 |
Correct |
201 ms |
12372 KB |
Output is correct |
8 |
Correct |
207 ms |
12372 KB |
Output is correct |
9 |
Correct |
205 ms |
12492 KB |
Output is correct |
10 |
Correct |
201 ms |
12468 KB |
Output is correct |
11 |
Execution timed out |
4035 ms |
28476 KB |
Time limit exceeded |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
4070 ms |
33744 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
9 ms |
12372 KB |
Output is correct |
2 |
Correct |
203 ms |
12476 KB |
Output is correct |
3 |
Correct |
107 ms |
12480 KB |
Output is correct |
4 |
Correct |
108 ms |
12372 KB |
Output is correct |
5 |
Correct |
246 ms |
12480 KB |
Output is correct |
6 |
Correct |
198 ms |
12480 KB |
Output is correct |
7 |
Correct |
201 ms |
12372 KB |
Output is correct |
8 |
Correct |
207 ms |
12372 KB |
Output is correct |
9 |
Correct |
205 ms |
12492 KB |
Output is correct |
10 |
Correct |
201 ms |
12468 KB |
Output is correct |
11 |
Execution timed out |
4035 ms |
28476 KB |
Time limit exceeded |
12 |
Halted |
0 ms |
0 KB |
- |