#include <bits/stdc++.h>
using namespace std;
const int N = 200200;
const int inf = 1e9;
int n, q;
int a[N], from[N], to[N];
int L[N], R[N], ans[N];
int mx[N << 2];
int sub[N << 2];
int lz[N << 2];
vector<int> toadd[N];
vector<int> todel[N];
vector<int> toget[N];
#define md ((l + r) >> 1)
void push(int v,int l,int r) {
if (lz[v] < inf) {
sub[v] = max(sub[v], mx[v] - lz[v]);
if (l < r) {
lz[v << 1] = min(lz[v << 1], lz[v]);
lz[v << 1 | 1] = min(lz[v << 1 | 1], lz[v]);
}
lz[v] = inf;
}
}
void pull(int v) {
mx[v] = max(mx[v << 1], mx[v << 1 | 1]);
sub[v] = max(sub[v << 1], sub[v << 1 | 1]);
}
void upd(int v,int l,int r,int pos,int val) {
push(v, l, r);
if (l > pos || r < pos) return;
if (l == r) {
mx[v] = val;
return;
}
upd(v << 1, l, md, pos, val);
upd(v << 1 | 1, md + 1, r, pos, val);
pull(v);
}
void upd(int v,int l,int r,int L,int R,int val) {
push(v, l, r);
if (L > r || R < l) return;
if (L <= l && r <= R) {
lz[v] = val;
push(v, l, r);
return;
}
upd(v << 1, l, md, L, R, val);
upd(v << 1 | 1, md + 1, r, L, R, val);
pull(v);
}
int get(int v,int l,int r,int L,int R) {
push(v, l, r);
if (L > r || R < l) return -1;
if (L <= l && r <= R) return sub[v];
return max(get(v << 1, l, md, L, R), get(v << 1 | 1, md + 1, r, L, R));
}
void go() {
for (int v = 1; v <= (n << 2); ++v) {
mx[v] = 0;
sub[v] = -1;
lz[v] = inf;
}
for (int i = 1; i <= n; ++i) {
toadd[i].clear();
todel[i].clear();
toget[i].clear();
}
for (int i = 1; i <= q; ++i) {
toget[R[i]].push_back(i);
}
for (int i = 1; i <= n; ++i) {
if (i + from[i] <= n) toadd[i + from[i]].push_back(i);
if (i + to[i] <= n) todel[i + to[i]].push_back(i);
for (int id : toadd[i]) upd(1, 1, n, id, a[id]);
if (i > from[i]) upd(1, 1, n, max(1, i - to[i]), i - from[i], a[i]);
for (int id : toget[i]) ans[id] = max(ans[id], get(1, 1, n, L[id], R[id]));
for (int id : todel[i]) upd(1, 1, n, id, 0);
}
}
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; ++i) {
scanf("%d %d %d", a + i, from + i, to + i);
}
scanf("%d", &q);
for (int i = 1; i <= q; ++i) {
ans[i] = -1;
scanf("%d %d", L + i, R + i);
}
go();
reverse(a + 1, a + 1 + n);
reverse(from + 1, from + 1 + n);
reverse(to + 1, to + 1 + n);
for (int i = 1; i <= q; ++i) {
L[i] = n + 1 - L[i];
R[i] = n + 1 - R[i];
swap(L[i], R[i]);
}
go();
for (int i = 1; i <= q; ++i) {
printf("%d\n", ans[i]);
}
}
Compilation message
antennas.cpp: In function 'int main()':
antennas.cpp:95:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &n);
~~~~~^~~~~~~~~~
antennas.cpp:97:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d %d", a + i, from + i, to + i);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
antennas.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &q);
~~~~~^~~~~~~~~~
antennas.cpp:102:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d %d", L + i, R + i);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
14464 KB |
Output is correct |
2 |
Correct |
17 ms |
14584 KB |
Output is correct |
3 |
Correct |
18 ms |
14464 KB |
Output is correct |
4 |
Correct |
18 ms |
14592 KB |
Output is correct |
5 |
Correct |
16 ms |
14588 KB |
Output is correct |
6 |
Correct |
19 ms |
14592 KB |
Output is correct |
7 |
Correct |
16 ms |
14464 KB |
Output is correct |
8 |
Correct |
17 ms |
14464 KB |
Output is correct |
9 |
Correct |
16 ms |
14464 KB |
Output is correct |
10 |
Correct |
17 ms |
14592 KB |
Output is correct |
11 |
Correct |
19 ms |
14464 KB |
Output is correct |
12 |
Correct |
17 ms |
14588 KB |
Output is correct |
13 |
Correct |
16 ms |
14464 KB |
Output is correct |
14 |
Correct |
17 ms |
14504 KB |
Output is correct |
15 |
Correct |
17 ms |
14464 KB |
Output is correct |
16 |
Correct |
17 ms |
14592 KB |
Output is correct |
17 |
Correct |
19 ms |
14464 KB |
Output is correct |
18 |
Correct |
20 ms |
14564 KB |
Output is correct |
19 |
Correct |
18 ms |
14464 KB |
Output is correct |
20 |
Correct |
16 ms |
14592 KB |
Output is correct |
21 |
Correct |
17 ms |
14532 KB |
Output is correct |
22 |
Correct |
18 ms |
14592 KB |
Output is correct |
23 |
Correct |
17 ms |
14500 KB |
Output is correct |
24 |
Correct |
19 ms |
14464 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
14464 KB |
Output is correct |
2 |
Correct |
17 ms |
14584 KB |
Output is correct |
3 |
Correct |
18 ms |
14464 KB |
Output is correct |
4 |
Correct |
18 ms |
14592 KB |
Output is correct |
5 |
Correct |
16 ms |
14588 KB |
Output is correct |
6 |
Correct |
19 ms |
14592 KB |
Output is correct |
7 |
Correct |
16 ms |
14464 KB |
Output is correct |
8 |
Correct |
17 ms |
14464 KB |
Output is correct |
9 |
Correct |
16 ms |
14464 KB |
Output is correct |
10 |
Correct |
17 ms |
14592 KB |
Output is correct |
11 |
Correct |
19 ms |
14464 KB |
Output is correct |
12 |
Correct |
17 ms |
14588 KB |
Output is correct |
13 |
Correct |
16 ms |
14464 KB |
Output is correct |
14 |
Correct |
17 ms |
14504 KB |
Output is correct |
15 |
Correct |
17 ms |
14464 KB |
Output is correct |
16 |
Correct |
17 ms |
14592 KB |
Output is correct |
17 |
Correct |
19 ms |
14464 KB |
Output is correct |
18 |
Correct |
20 ms |
14564 KB |
Output is correct |
19 |
Correct |
18 ms |
14464 KB |
Output is correct |
20 |
Correct |
16 ms |
14592 KB |
Output is correct |
21 |
Correct |
17 ms |
14532 KB |
Output is correct |
22 |
Correct |
18 ms |
14592 KB |
Output is correct |
23 |
Correct |
17 ms |
14500 KB |
Output is correct |
24 |
Correct |
19 ms |
14464 KB |
Output is correct |
25 |
Correct |
199 ms |
19972 KB |
Output is correct |
26 |
Correct |
65 ms |
15352 KB |
Output is correct |
27 |
Correct |
283 ms |
22264 KB |
Output is correct |
28 |
Correct |
234 ms |
22136 KB |
Output is correct |
29 |
Correct |
170 ms |
19960 KB |
Output is correct |
30 |
Correct |
207 ms |
19676 KB |
Output is correct |
31 |
Correct |
220 ms |
21296 KB |
Output is correct |
32 |
Correct |
248 ms |
22264 KB |
Output is correct |
33 |
Correct |
215 ms |
21784 KB |
Output is correct |
34 |
Correct |
105 ms |
18248 KB |
Output is correct |
35 |
Correct |
234 ms |
22280 KB |
Output is correct |
36 |
Correct |
260 ms |
22136 KB |
Output is correct |
37 |
Correct |
188 ms |
18552 KB |
Output is correct |
38 |
Correct |
339 ms |
21112 KB |
Output is correct |
39 |
Correct |
43 ms |
15608 KB |
Output is correct |
40 |
Correct |
259 ms |
21212 KB |
Output is correct |
41 |
Correct |
188 ms |
19576 KB |
Output is correct |
42 |
Correct |
244 ms |
21112 KB |
Output is correct |
43 |
Correct |
84 ms |
17016 KB |
Output is correct |
44 |
Correct |
255 ms |
21288 KB |
Output is correct |
45 |
Correct |
48 ms |
15864 KB |
Output is correct |
46 |
Correct |
235 ms |
21200 KB |
Output is correct |
47 |
Correct |
67 ms |
16424 KB |
Output is correct |
48 |
Correct |
249 ms |
21112 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
592 ms |
34136 KB |
Output is correct |
2 |
Correct |
677 ms |
36344 KB |
Output is correct |
3 |
Correct |
421 ms |
29816 KB |
Output is correct |
4 |
Correct |
640 ms |
36704 KB |
Output is correct |
5 |
Correct |
259 ms |
24568 KB |
Output is correct |
6 |
Correct |
643 ms |
36364 KB |
Output is correct |
7 |
Correct |
498 ms |
33400 KB |
Output is correct |
8 |
Correct |
574 ms |
36484 KB |
Output is correct |
9 |
Correct |
67 ms |
17912 KB |
Output is correct |
10 |
Correct |
617 ms |
36444 KB |
Output is correct |
11 |
Correct |
383 ms |
28152 KB |
Output is correct |
12 |
Correct |
602 ms |
36472 KB |
Output is correct |
13 |
Correct |
333 ms |
34124 KB |
Output is correct |
14 |
Correct |
304 ms |
33908 KB |
Output is correct |
15 |
Correct |
355 ms |
33100 KB |
Output is correct |
16 |
Correct |
253 ms |
33264 KB |
Output is correct |
17 |
Correct |
338 ms |
34720 KB |
Output is correct |
18 |
Correct |
301 ms |
33656 KB |
Output is correct |
19 |
Correct |
299 ms |
33736 KB |
Output is correct |
20 |
Correct |
350 ms |
33728 KB |
Output is correct |
21 |
Correct |
360 ms |
34240 KB |
Output is correct |
22 |
Correct |
299 ms |
33880 KB |
Output is correct |
23 |
Correct |
320 ms |
33908 KB |
Output is correct |
24 |
Correct |
266 ms |
32856 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
14464 KB |
Output is correct |
2 |
Correct |
17 ms |
14584 KB |
Output is correct |
3 |
Correct |
18 ms |
14464 KB |
Output is correct |
4 |
Correct |
18 ms |
14592 KB |
Output is correct |
5 |
Correct |
16 ms |
14588 KB |
Output is correct |
6 |
Correct |
19 ms |
14592 KB |
Output is correct |
7 |
Correct |
16 ms |
14464 KB |
Output is correct |
8 |
Correct |
17 ms |
14464 KB |
Output is correct |
9 |
Correct |
16 ms |
14464 KB |
Output is correct |
10 |
Correct |
17 ms |
14592 KB |
Output is correct |
11 |
Correct |
19 ms |
14464 KB |
Output is correct |
12 |
Correct |
17 ms |
14588 KB |
Output is correct |
13 |
Correct |
16 ms |
14464 KB |
Output is correct |
14 |
Correct |
17 ms |
14504 KB |
Output is correct |
15 |
Correct |
17 ms |
14464 KB |
Output is correct |
16 |
Correct |
17 ms |
14592 KB |
Output is correct |
17 |
Correct |
19 ms |
14464 KB |
Output is correct |
18 |
Correct |
20 ms |
14564 KB |
Output is correct |
19 |
Correct |
18 ms |
14464 KB |
Output is correct |
20 |
Correct |
16 ms |
14592 KB |
Output is correct |
21 |
Correct |
17 ms |
14532 KB |
Output is correct |
22 |
Correct |
18 ms |
14592 KB |
Output is correct |
23 |
Correct |
17 ms |
14500 KB |
Output is correct |
24 |
Correct |
19 ms |
14464 KB |
Output is correct |
25 |
Correct |
199 ms |
19972 KB |
Output is correct |
26 |
Correct |
65 ms |
15352 KB |
Output is correct |
27 |
Correct |
283 ms |
22264 KB |
Output is correct |
28 |
Correct |
234 ms |
22136 KB |
Output is correct |
29 |
Correct |
170 ms |
19960 KB |
Output is correct |
30 |
Correct |
207 ms |
19676 KB |
Output is correct |
31 |
Correct |
220 ms |
21296 KB |
Output is correct |
32 |
Correct |
248 ms |
22264 KB |
Output is correct |
33 |
Correct |
215 ms |
21784 KB |
Output is correct |
34 |
Correct |
105 ms |
18248 KB |
Output is correct |
35 |
Correct |
234 ms |
22280 KB |
Output is correct |
36 |
Correct |
260 ms |
22136 KB |
Output is correct |
37 |
Correct |
188 ms |
18552 KB |
Output is correct |
38 |
Correct |
339 ms |
21112 KB |
Output is correct |
39 |
Correct |
43 ms |
15608 KB |
Output is correct |
40 |
Correct |
259 ms |
21212 KB |
Output is correct |
41 |
Correct |
188 ms |
19576 KB |
Output is correct |
42 |
Correct |
244 ms |
21112 KB |
Output is correct |
43 |
Correct |
84 ms |
17016 KB |
Output is correct |
44 |
Correct |
255 ms |
21288 KB |
Output is correct |
45 |
Correct |
48 ms |
15864 KB |
Output is correct |
46 |
Correct |
235 ms |
21200 KB |
Output is correct |
47 |
Correct |
67 ms |
16424 KB |
Output is correct |
48 |
Correct |
249 ms |
21112 KB |
Output is correct |
49 |
Correct |
592 ms |
34136 KB |
Output is correct |
50 |
Correct |
677 ms |
36344 KB |
Output is correct |
51 |
Correct |
421 ms |
29816 KB |
Output is correct |
52 |
Correct |
640 ms |
36704 KB |
Output is correct |
53 |
Correct |
259 ms |
24568 KB |
Output is correct |
54 |
Correct |
643 ms |
36364 KB |
Output is correct |
55 |
Correct |
498 ms |
33400 KB |
Output is correct |
56 |
Correct |
574 ms |
36484 KB |
Output is correct |
57 |
Correct |
67 ms |
17912 KB |
Output is correct |
58 |
Correct |
617 ms |
36444 KB |
Output is correct |
59 |
Correct |
383 ms |
28152 KB |
Output is correct |
60 |
Correct |
602 ms |
36472 KB |
Output is correct |
61 |
Correct |
333 ms |
34124 KB |
Output is correct |
62 |
Correct |
304 ms |
33908 KB |
Output is correct |
63 |
Correct |
355 ms |
33100 KB |
Output is correct |
64 |
Correct |
253 ms |
33264 KB |
Output is correct |
65 |
Correct |
338 ms |
34720 KB |
Output is correct |
66 |
Correct |
301 ms |
33656 KB |
Output is correct |
67 |
Correct |
299 ms |
33736 KB |
Output is correct |
68 |
Correct |
350 ms |
33728 KB |
Output is correct |
69 |
Correct |
360 ms |
34240 KB |
Output is correct |
70 |
Correct |
299 ms |
33880 KB |
Output is correct |
71 |
Correct |
320 ms |
33908 KB |
Output is correct |
72 |
Correct |
266 ms |
32856 KB |
Output is correct |
73 |
Correct |
1348 ms |
43820 KB |
Output is correct |
74 |
Correct |
705 ms |
37792 KB |
Output is correct |
75 |
Correct |
961 ms |
40824 KB |
Output is correct |
76 |
Correct |
1096 ms |
48504 KB |
Output is correct |
77 |
Correct |
584 ms |
32348 KB |
Output is correct |
78 |
Correct |
972 ms |
45340 KB |
Output is correct |
79 |
Correct |
1004 ms |
45176 KB |
Output is correct |
80 |
Correct |
1162 ms |
48688 KB |
Output is correct |
81 |
Correct |
449 ms |
26232 KB |
Output is correct |
82 |
Correct |
934 ms |
43256 KB |
Output is correct |
83 |
Correct |
862 ms |
38848 KB |
Output is correct |
84 |
Correct |
1167 ms |
48724 KB |
Output is correct |
85 |
Correct |
619 ms |
41588 KB |
Output is correct |
86 |
Correct |
885 ms |
44996 KB |
Output is correct |
87 |
Correct |
405 ms |
35452 KB |
Output is correct |
88 |
Correct |
1002 ms |
44360 KB |
Output is correct |
89 |
Correct |
794 ms |
43460 KB |
Output is correct |
90 |
Correct |
857 ms |
44704 KB |
Output is correct |
91 |
Correct |
524 ms |
38352 KB |
Output is correct |
92 |
Correct |
848 ms |
44760 KB |
Output is correct |
93 |
Correct |
406 ms |
36828 KB |
Output is correct |
94 |
Correct |
780 ms |
44980 KB |
Output is correct |
95 |
Correct |
509 ms |
37748 KB |
Output is correct |
96 |
Correct |
883 ms |
43876 KB |
Output is correct |