#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ull, ull> pull;
typedef pair<ld, ld> pld;
pii merge(pii a, pii b){
return mp(max(a.ff, b.ff), max(a.ss, b.ss));
}
int n;
int a[500009];
pii seg[2000009];
int lazy[2000009];
void push(int v){
lazy[2*v] = max(lazy[2*v], lazy[v]);
lazy[2*v+1] = max(lazy[2*v+1], lazy[v]);
seg[2*v].ff = max(seg[2*v].ff, seg[2*v].ss+lazy[2*v]);
seg[2*v+1].ff = max(seg[2*v+1].ff, seg[2*v+1].ss+lazy[2*v+1]);
lazy[v] = 0;
}
void build(int v, int tl, int tr){
if(tl == tr){
seg[v] = {a[tl], a[tl]};
return;
}
build(2*v, tl, (tl+tr)/2);
build(2*v+1, (tl+tr)/2+1, tr);
seg[v] = merge(seg[2*v], seg[2*v+1]);
}
void upd(int v, int tl, int tr, int l, int r, int val){
if(r < tl || tr < l)
return;
if(l <= tl && tr <= r){
lazy[v] = max(lazy[v], val);
seg[v].ff = max(seg[v].ff, seg[v].ss+lazy[v]);
}
else{
push(v);
upd(2*v, tl, (tl+tr)/2, l, r, val);
upd(2*v+1, (tl+tr)/2+1, tr, l, r, val);
seg[v] = merge(seg[2*v], seg[2*v+1]);
}
}
pii get(int v, int tl, int tr, int l, int r){
if(r < tl || tr < l)
return {0, 0};
if(l <= tl && tr <= r)
return seg[v];
else{
push(v);
return merge(get(2*v, tl, (tl+tr)/2, l, r), get(2*v+1, (tl+tr)/2+1, tr, l, r));
}
}
int q;
vector<pii> qu[500009];
int ans[500009];
int main() {
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
cin >> n;
for(int i = 0; i < n; ++i)
cin >> a[i];
build(1, 0, n-1);
cin >> q;
for(int i = 0; i < q; ++i){
int l, r;
cin >> l >> r;
qu[l-1].pb({r-1, i});
}
deque<pii> inc;
for(int i = n-1; i >= 0; --i){
for(auto u : inc){
upd(1, 0, n-1, 2*u.ss-i, n-1, a[i]+u.ff);
if(u.ff >= a[i])
break;
}
while(inc.size() > 0){
if(inc.front().ff <= a[i])
inc.pop_front();
else
break;
}
inc.push_front({a[i], i});
for(auto u : qu[i])
ans[u.ss] = get(1, 0, n-1, i+2, u.ff).ff;
}
for(int i = 0; i < q; ++i)
cout << ans[i] << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
12032 KB |
Output is correct |
2 |
Correct |
11 ms |
12032 KB |
Output is correct |
3 |
Correct |
11 ms |
12160 KB |
Output is correct |
4 |
Correct |
12 ms |
12160 KB |
Output is correct |
5 |
Correct |
12 ms |
12032 KB |
Output is correct |
6 |
Correct |
12 ms |
12160 KB |
Output is correct |
7 |
Correct |
12 ms |
12160 KB |
Output is correct |
8 |
Correct |
11 ms |
12032 KB |
Output is correct |
9 |
Correct |
12 ms |
12032 KB |
Output is correct |
10 |
Correct |
12 ms |
12032 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
12032 KB |
Output is correct |
2 |
Correct |
11 ms |
12032 KB |
Output is correct |
3 |
Correct |
11 ms |
12160 KB |
Output is correct |
4 |
Correct |
12 ms |
12160 KB |
Output is correct |
5 |
Correct |
12 ms |
12032 KB |
Output is correct |
6 |
Correct |
12 ms |
12160 KB |
Output is correct |
7 |
Correct |
12 ms |
12160 KB |
Output is correct |
8 |
Correct |
11 ms |
12032 KB |
Output is correct |
9 |
Correct |
12 ms |
12032 KB |
Output is correct |
10 |
Correct |
12 ms |
12032 KB |
Output is correct |
11 |
Correct |
614 ms |
25884 KB |
Output is correct |
12 |
Correct |
607 ms |
30300 KB |
Output is correct |
13 |
Correct |
582 ms |
30484 KB |
Output is correct |
14 |
Correct |
591 ms |
30456 KB |
Output is correct |
15 |
Correct |
605 ms |
30356 KB |
Output is correct |
16 |
Correct |
571 ms |
29692 KB |
Output is correct |
17 |
Correct |
582 ms |
29816 KB |
Output is correct |
18 |
Correct |
593 ms |
29760 KB |
Output is correct |
19 |
Correct |
607 ms |
30328 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
236 ms |
19064 KB |
Output is correct |
2 |
Correct |
170 ms |
20728 KB |
Output is correct |
3 |
Correct |
188 ms |
19064 KB |
Output is correct |
4 |
Correct |
223 ms |
19064 KB |
Output is correct |
5 |
Correct |
223 ms |
19064 KB |
Output is correct |
6 |
Correct |
196 ms |
19192 KB |
Output is correct |
7 |
Correct |
197 ms |
19960 KB |
Output is correct |
8 |
Correct |
196 ms |
19960 KB |
Output is correct |
9 |
Correct |
211 ms |
20344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
12032 KB |
Output is correct |
2 |
Correct |
11 ms |
12032 KB |
Output is correct |
3 |
Correct |
11 ms |
12160 KB |
Output is correct |
4 |
Correct |
12 ms |
12160 KB |
Output is correct |
5 |
Correct |
12 ms |
12032 KB |
Output is correct |
6 |
Correct |
12 ms |
12160 KB |
Output is correct |
7 |
Correct |
12 ms |
12160 KB |
Output is correct |
8 |
Correct |
11 ms |
12032 KB |
Output is correct |
9 |
Correct |
12 ms |
12032 KB |
Output is correct |
10 |
Correct |
12 ms |
12032 KB |
Output is correct |
11 |
Correct |
614 ms |
25884 KB |
Output is correct |
12 |
Correct |
607 ms |
30300 KB |
Output is correct |
13 |
Correct |
582 ms |
30484 KB |
Output is correct |
14 |
Correct |
591 ms |
30456 KB |
Output is correct |
15 |
Correct |
605 ms |
30356 KB |
Output is correct |
16 |
Correct |
571 ms |
29692 KB |
Output is correct |
17 |
Correct |
582 ms |
29816 KB |
Output is correct |
18 |
Correct |
593 ms |
29760 KB |
Output is correct |
19 |
Correct |
607 ms |
30328 KB |
Output is correct |
20 |
Correct |
236 ms |
19064 KB |
Output is correct |
21 |
Correct |
170 ms |
20728 KB |
Output is correct |
22 |
Correct |
188 ms |
19064 KB |
Output is correct |
23 |
Correct |
223 ms |
19064 KB |
Output is correct |
24 |
Correct |
223 ms |
19064 KB |
Output is correct |
25 |
Correct |
196 ms |
19192 KB |
Output is correct |
26 |
Correct |
197 ms |
19960 KB |
Output is correct |
27 |
Correct |
196 ms |
19960 KB |
Output is correct |
28 |
Correct |
211 ms |
20344 KB |
Output is correct |
29 |
Correct |
1587 ms |
54164 KB |
Output is correct |
30 |
Correct |
1438 ms |
58372 KB |
Output is correct |
31 |
Correct |
1462 ms |
54260 KB |
Output is correct |
32 |
Correct |
1526 ms |
54264 KB |
Output is correct |
33 |
Correct |
1521 ms |
54264 KB |
Output is correct |
34 |
Correct |
1441 ms |
52068 KB |
Output is correct |
35 |
Correct |
1462 ms |
51880 KB |
Output is correct |
36 |
Correct |
1467 ms |
51900 KB |
Output is correct |
37 |
Correct |
1517 ms |
53128 KB |
Output is correct |
38 |
Correct |
1266 ms |
60152 KB |
Output is correct |
39 |
Correct |
1269 ms |
59940 KB |
Output is correct |
40 |
Correct |
1172 ms |
56672 KB |
Output is correct |
41 |
Correct |
1209 ms |
56120 KB |
Output is correct |
42 |
Correct |
1183 ms |
56236 KB |
Output is correct |
43 |
Correct |
1234 ms |
58104 KB |
Output is correct |
44 |
Correct |
1330 ms |
59460 KB |
Output is correct |
45 |
Correct |
1300 ms |
59424 KB |
Output is correct |
46 |
Correct |
1213 ms |
56144 KB |
Output is correct |
47 |
Correct |
1217 ms |
55828 KB |
Output is correct |
48 |
Correct |
1182 ms |
55828 KB |
Output is correct |
49 |
Correct |
1253 ms |
57976 KB |
Output is correct |
50 |
Correct |
1380 ms |
57512 KB |
Output is correct |
51 |
Correct |
1414 ms |
57536 KB |
Output is correct |
52 |
Correct |
1320 ms |
55124 KB |
Output is correct |
53 |
Correct |
1324 ms |
54888 KB |
Output is correct |
54 |
Correct |
1309 ms |
54648 KB |
Output is correct |
55 |
Correct |
1359 ms |
56368 KB |
Output is correct |