#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
const int N=200050;
const int M=2*N;
const ll inf=1e18;
int h[N],a[N],b[N];
ll ans[N];
vector<pair<int,int>> Qs[N];
vector<int> add[N],del[N];
int root,tsz,ls[M],rs[M];
ll mx1[M],mx2[M],lzy[M];
void Build(int &c, int ss, int se)
{
c=++tsz;mx1[c]=mx2[c]=lzy[c]=-inf;
if(ss==se) return;
int mid=ss+se>>1;
Build(ls[c],ss,mid);
Build(rs[c],mid+1,se);
}
void upd(int c, ll x)
{
mx2[c]=max(mx2[c],mx1[c]+x);
lzy[c]=max(lzy[c],x);
}
void push(int c)
{
if(lzy[c]!=-inf)
{
upd(ls[c],lzy[c]);
upd(rs[c],lzy[c]);
lzy[c]=-inf;
}
}
void Add(int c, int ss, int se, int qs, int qe, ll x)
{
if(qs>qe || qs>se || ss>qe) return;
if(qs<=ss && qe>=se){ upd(c,x);return;}
push(c);
int mid=ss+se>>1;
Add(ls[c],ss,mid,qs,qe,x);
Add(rs[c],mid+1,se,qs,qe,x);
mx2[c]=max(mx2[ls[c]],mx2[rs[c]]);
}
void Set(int c, int ss, int se, int qi, ll x)
{
if(ss==se){ mx1[c]=x;return;}
push(c);
int mid=ss+se>>1;
if(qi<=mid) Set(ls[c],ss,mid,qi,x);
else Set(rs[c],mid+1,se,qi,x);
mx1[c]=max(mx1[ls[c]],mx1[rs[c]]);
}
ll Get(int c, int ss, int se, int qs, int qe)
{
if(qs>qe || qs>se || ss>qe) return -inf;
if(qs<=ss && qe>=se) return mx2[c];
push(c);
int mid=ss+se>>1;
return max(Get(ls[c],ss,mid,qs,qe),Get(rs[c],mid+1,se,qs,qe));
}
int n,q;
void Solve()
{
Build(root,1,n);
for(int i=1;i<=n;i++)
{
int l=i+a[i],r=i+b[i];
l=min(l,n+1);
r=min(r,n+1);
add[l].pb(i);
del[r].pb(i);
for(int x:add[i]) Set(root,1,n,x,h[x]);
Add(root,1,n,i-b[i],i-a[i],-h[i]);
for(auto t:Qs[i]) ans[t.second]=max(ans[t.second],Get(root,1,n,t.first,i));
for(int x:del[i]) Set(root,1,n,x,-inf);
add[i].clear();
del[i].clear();
}
for(int i=1;i<=tsz;i++) ls[i]=rs[i]=0;
tsz=root=0;
}
int main()
{
int l,r;
scanf("%i",&n);
for(int i=1;i<=n;i++) scanf("%i %i %i",&h[i],&a[i],&b[i]);
scanf("%i",&q);
for(int i=1;i<=q;i++) scanf("%i %i",&l,&r),Qs[r].pb({l,i}),ans[i]=-1;
Solve();
for(int i=1;i<=n;i++) h[i]=-h[i];
Solve();
for(int i=1;i<=q;i++) printf("%lld\n",ans[i]);
return 0;
}
Compilation message
antennas.cpp: In function 'void Build(int&, int, int)':
antennas.cpp:18:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
antennas.cpp: In function 'void Add(int, int, int, int, int, long long int)':
antennas.cpp:41:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
antennas.cpp: In function 'void Set(int, int, int, int, long long int)':
antennas.cpp:50:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
antennas.cpp: In function 'long long int Get(int, int, int, int, int)':
antennas.cpp:60:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
antennas.cpp: In function 'int main()':
antennas.cpp:87:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i",&n);
~~~~~^~~~~~~~~
antennas.cpp:88:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=1;i<=n;i++) scanf("%i %i %i",&h[i],&a[i],&b[i]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
antennas.cpp:89:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i",&q);
~~~~~^~~~~~~~~
antennas.cpp:90:60: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=1;i<=q;i++) scanf("%i %i",&l,&r),Qs[r].pb({l,i}),ans[i]=-1;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
15 ms |
14456 KB |
Output is correct |
2 |
Correct |
15 ms |
14584 KB |
Output is correct |
3 |
Correct |
15 ms |
14584 KB |
Output is correct |
4 |
Correct |
15 ms |
14456 KB |
Output is correct |
5 |
Correct |
15 ms |
14584 KB |
Output is correct |
6 |
Correct |
15 ms |
14456 KB |
Output is correct |
7 |
Correct |
15 ms |
14456 KB |
Output is correct |
8 |
Correct |
15 ms |
14456 KB |
Output is correct |
9 |
Correct |
15 ms |
14508 KB |
Output is correct |
10 |
Correct |
16 ms |
14456 KB |
Output is correct |
11 |
Correct |
15 ms |
14456 KB |
Output is correct |
12 |
Correct |
15 ms |
14456 KB |
Output is correct |
13 |
Correct |
15 ms |
14456 KB |
Output is correct |
14 |
Correct |
15 ms |
14456 KB |
Output is correct |
15 |
Correct |
15 ms |
14584 KB |
Output is correct |
16 |
Correct |
15 ms |
14456 KB |
Output is correct |
17 |
Correct |
15 ms |
14572 KB |
Output is correct |
18 |
Correct |
15 ms |
14456 KB |
Output is correct |
19 |
Correct |
15 ms |
14456 KB |
Output is correct |
20 |
Correct |
15 ms |
14556 KB |
Output is correct |
21 |
Correct |
16 ms |
14456 KB |
Output is correct |
22 |
Correct |
15 ms |
14440 KB |
Output is correct |
23 |
Correct |
15 ms |
14456 KB |
Output is correct |
24 |
Correct |
15 ms |
14584 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
15 ms |
14456 KB |
Output is correct |
2 |
Correct |
15 ms |
14584 KB |
Output is correct |
3 |
Correct |
15 ms |
14584 KB |
Output is correct |
4 |
Correct |
15 ms |
14456 KB |
Output is correct |
5 |
Correct |
15 ms |
14584 KB |
Output is correct |
6 |
Correct |
15 ms |
14456 KB |
Output is correct |
7 |
Correct |
15 ms |
14456 KB |
Output is correct |
8 |
Correct |
15 ms |
14456 KB |
Output is correct |
9 |
Correct |
15 ms |
14508 KB |
Output is correct |
10 |
Correct |
16 ms |
14456 KB |
Output is correct |
11 |
Correct |
15 ms |
14456 KB |
Output is correct |
12 |
Correct |
15 ms |
14456 KB |
Output is correct |
13 |
Correct |
15 ms |
14456 KB |
Output is correct |
14 |
Correct |
15 ms |
14456 KB |
Output is correct |
15 |
Correct |
15 ms |
14584 KB |
Output is correct |
16 |
Correct |
15 ms |
14456 KB |
Output is correct |
17 |
Correct |
15 ms |
14572 KB |
Output is correct |
18 |
Correct |
15 ms |
14456 KB |
Output is correct |
19 |
Correct |
15 ms |
14456 KB |
Output is correct |
20 |
Correct |
15 ms |
14556 KB |
Output is correct |
21 |
Correct |
16 ms |
14456 KB |
Output is correct |
22 |
Correct |
15 ms |
14440 KB |
Output is correct |
23 |
Correct |
15 ms |
14456 KB |
Output is correct |
24 |
Correct |
15 ms |
14584 KB |
Output is correct |
25 |
Correct |
133 ms |
19884 KB |
Output is correct |
26 |
Correct |
31 ms |
15224 KB |
Output is correct |
27 |
Correct |
193 ms |
22108 KB |
Output is correct |
28 |
Correct |
206 ms |
22276 KB |
Output is correct |
29 |
Correct |
140 ms |
19960 KB |
Output is correct |
30 |
Correct |
142 ms |
19760 KB |
Output is correct |
31 |
Correct |
156 ms |
21152 KB |
Output is correct |
32 |
Correct |
202 ms |
22148 KB |
Output is correct |
33 |
Correct |
181 ms |
21624 KB |
Output is correct |
34 |
Correct |
104 ms |
18324 KB |
Output is correct |
35 |
Correct |
186 ms |
22008 KB |
Output is correct |
36 |
Correct |
199 ms |
22140 KB |
Output is correct |
37 |
Correct |
113 ms |
18524 KB |
Output is correct |
38 |
Correct |
195 ms |
21240 KB |
Output is correct |
39 |
Correct |
41 ms |
15608 KB |
Output is correct |
40 |
Correct |
193 ms |
21212 KB |
Output is correct |
41 |
Correct |
147 ms |
19448 KB |
Output is correct |
42 |
Correct |
195 ms |
21240 KB |
Output is correct |
43 |
Correct |
72 ms |
16760 KB |
Output is correct |
44 |
Correct |
190 ms |
21276 KB |
Output is correct |
45 |
Correct |
46 ms |
15740 KB |
Output is correct |
46 |
Correct |
188 ms |
21168 KB |
Output is correct |
47 |
Correct |
60 ms |
16376 KB |
Output is correct |
48 |
Correct |
192 ms |
21268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
530 ms |
38212 KB |
Output is correct |
2 |
Correct |
597 ms |
40312 KB |
Output is correct |
3 |
Correct |
373 ms |
32356 KB |
Output is correct |
4 |
Correct |
589 ms |
40444 KB |
Output is correct |
5 |
Correct |
217 ms |
26348 KB |
Output is correct |
6 |
Correct |
598 ms |
40240 KB |
Output is correct |
7 |
Correct |
489 ms |
36196 KB |
Output is correct |
8 |
Correct |
615 ms |
40268 KB |
Output is correct |
9 |
Correct |
71 ms |
18552 KB |
Output is correct |
10 |
Correct |
603 ms |
40436 KB |
Output is correct |
11 |
Correct |
316 ms |
30156 KB |
Output is correct |
12 |
Correct |
606 ms |
40416 KB |
Output is correct |
13 |
Correct |
283 ms |
37032 KB |
Output is correct |
14 |
Correct |
271 ms |
36852 KB |
Output is correct |
15 |
Correct |
288 ms |
36824 KB |
Output is correct |
16 |
Correct |
235 ms |
37288 KB |
Output is correct |
17 |
Correct |
281 ms |
36880 KB |
Output is correct |
18 |
Correct |
261 ms |
37220 KB |
Output is correct |
19 |
Correct |
269 ms |
36940 KB |
Output is correct |
20 |
Correct |
265 ms |
37044 KB |
Output is correct |
21 |
Correct |
274 ms |
36824 KB |
Output is correct |
22 |
Correct |
283 ms |
37280 KB |
Output is correct |
23 |
Correct |
272 ms |
36804 KB |
Output is correct |
24 |
Correct |
236 ms |
36688 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
15 ms |
14456 KB |
Output is correct |
2 |
Correct |
15 ms |
14584 KB |
Output is correct |
3 |
Correct |
15 ms |
14584 KB |
Output is correct |
4 |
Correct |
15 ms |
14456 KB |
Output is correct |
5 |
Correct |
15 ms |
14584 KB |
Output is correct |
6 |
Correct |
15 ms |
14456 KB |
Output is correct |
7 |
Correct |
15 ms |
14456 KB |
Output is correct |
8 |
Correct |
15 ms |
14456 KB |
Output is correct |
9 |
Correct |
15 ms |
14508 KB |
Output is correct |
10 |
Correct |
16 ms |
14456 KB |
Output is correct |
11 |
Correct |
15 ms |
14456 KB |
Output is correct |
12 |
Correct |
15 ms |
14456 KB |
Output is correct |
13 |
Correct |
15 ms |
14456 KB |
Output is correct |
14 |
Correct |
15 ms |
14456 KB |
Output is correct |
15 |
Correct |
15 ms |
14584 KB |
Output is correct |
16 |
Correct |
15 ms |
14456 KB |
Output is correct |
17 |
Correct |
15 ms |
14572 KB |
Output is correct |
18 |
Correct |
15 ms |
14456 KB |
Output is correct |
19 |
Correct |
15 ms |
14456 KB |
Output is correct |
20 |
Correct |
15 ms |
14556 KB |
Output is correct |
21 |
Correct |
16 ms |
14456 KB |
Output is correct |
22 |
Correct |
15 ms |
14440 KB |
Output is correct |
23 |
Correct |
15 ms |
14456 KB |
Output is correct |
24 |
Correct |
15 ms |
14584 KB |
Output is correct |
25 |
Correct |
133 ms |
19884 KB |
Output is correct |
26 |
Correct |
31 ms |
15224 KB |
Output is correct |
27 |
Correct |
193 ms |
22108 KB |
Output is correct |
28 |
Correct |
206 ms |
22276 KB |
Output is correct |
29 |
Correct |
140 ms |
19960 KB |
Output is correct |
30 |
Correct |
142 ms |
19760 KB |
Output is correct |
31 |
Correct |
156 ms |
21152 KB |
Output is correct |
32 |
Correct |
202 ms |
22148 KB |
Output is correct |
33 |
Correct |
181 ms |
21624 KB |
Output is correct |
34 |
Correct |
104 ms |
18324 KB |
Output is correct |
35 |
Correct |
186 ms |
22008 KB |
Output is correct |
36 |
Correct |
199 ms |
22140 KB |
Output is correct |
37 |
Correct |
113 ms |
18524 KB |
Output is correct |
38 |
Correct |
195 ms |
21240 KB |
Output is correct |
39 |
Correct |
41 ms |
15608 KB |
Output is correct |
40 |
Correct |
193 ms |
21212 KB |
Output is correct |
41 |
Correct |
147 ms |
19448 KB |
Output is correct |
42 |
Correct |
195 ms |
21240 KB |
Output is correct |
43 |
Correct |
72 ms |
16760 KB |
Output is correct |
44 |
Correct |
190 ms |
21276 KB |
Output is correct |
45 |
Correct |
46 ms |
15740 KB |
Output is correct |
46 |
Correct |
188 ms |
21168 KB |
Output is correct |
47 |
Correct |
60 ms |
16376 KB |
Output is correct |
48 |
Correct |
192 ms |
21268 KB |
Output is correct |
49 |
Correct |
530 ms |
38212 KB |
Output is correct |
50 |
Correct |
597 ms |
40312 KB |
Output is correct |
51 |
Correct |
373 ms |
32356 KB |
Output is correct |
52 |
Correct |
589 ms |
40444 KB |
Output is correct |
53 |
Correct |
217 ms |
26348 KB |
Output is correct |
54 |
Correct |
598 ms |
40240 KB |
Output is correct |
55 |
Correct |
489 ms |
36196 KB |
Output is correct |
56 |
Correct |
615 ms |
40268 KB |
Output is correct |
57 |
Correct |
71 ms |
18552 KB |
Output is correct |
58 |
Correct |
603 ms |
40436 KB |
Output is correct |
59 |
Correct |
316 ms |
30156 KB |
Output is correct |
60 |
Correct |
606 ms |
40416 KB |
Output is correct |
61 |
Correct |
283 ms |
37032 KB |
Output is correct |
62 |
Correct |
271 ms |
36852 KB |
Output is correct |
63 |
Correct |
288 ms |
36824 KB |
Output is correct |
64 |
Correct |
235 ms |
37288 KB |
Output is correct |
65 |
Correct |
281 ms |
36880 KB |
Output is correct |
66 |
Correct |
261 ms |
37220 KB |
Output is correct |
67 |
Correct |
269 ms |
36940 KB |
Output is correct |
68 |
Correct |
265 ms |
37044 KB |
Output is correct |
69 |
Correct |
274 ms |
36824 KB |
Output is correct |
70 |
Correct |
283 ms |
37280 KB |
Output is correct |
71 |
Correct |
272 ms |
36804 KB |
Output is correct |
72 |
Correct |
236 ms |
36688 KB |
Output is correct |
73 |
Correct |
871 ms |
44660 KB |
Output is correct |
74 |
Correct |
642 ms |
41164 KB |
Output is correct |
75 |
Correct |
837 ms |
41732 KB |
Output is correct |
76 |
Correct |
1112 ms |
49760 KB |
Output is correct |
77 |
Correct |
534 ms |
32728 KB |
Output is correct |
78 |
Correct |
912 ms |
46436 KB |
Output is correct |
79 |
Correct |
1051 ms |
45880 KB |
Output is correct |
80 |
Correct |
1169 ms |
49480 KB |
Output is correct |
81 |
Correct |
364 ms |
26612 KB |
Output is correct |
82 |
Correct |
868 ms |
44872 KB |
Output is correct |
83 |
Correct |
759 ms |
39496 KB |
Output is correct |
84 |
Correct |
1099 ms |
49576 KB |
Output is correct |
85 |
Correct |
588 ms |
42324 KB |
Output is correct |
86 |
Correct |
815 ms |
45456 KB |
Output is correct |
87 |
Correct |
341 ms |
38216 KB |
Output is correct |
88 |
Correct |
680 ms |
45672 KB |
Output is correct |
89 |
Correct |
601 ms |
43304 KB |
Output is correct |
90 |
Correct |
689 ms |
45800 KB |
Output is correct |
91 |
Correct |
443 ms |
40088 KB |
Output is correct |
92 |
Correct |
703 ms |
45644 KB |
Output is correct |
93 |
Correct |
360 ms |
38424 KB |
Output is correct |
94 |
Correct |
726 ms |
45980 KB |
Output is correct |
95 |
Correct |
399 ms |
39608 KB |
Output is correct |
96 |
Correct |
669 ms |
45640 KB |
Output is correct |