#include<iostream>
#include<vector>
#include<set>
#define f first
#define s second
#define int long long
#define pii pair<int,int>
using namespace std;
const int N = 2e5 + 5, inf = 2e9; // !
int h[N];
vector<int> add[N];
vector<pair<int,int>> qry[N];
struct node {
int mx, mn, ans;
} t[4 * N];
struct lazy {
int mn, mx;
} lz[4 * N];
node merge(node a, node b) {
return {max(a.mx, b.mx), min(a.mn, b.mn), max(a.ans, b.ans)};
}
void build(int u, int l, int r) {
lz[u] = {inf, 0};
if(l == r) {
t[u] = { 0, inf, -inf};
return;
}
int mid = (l + r) / 2;
build(2 * u, l, mid); build(2 * u + 1, mid + 1, r);
t[u] = merge(t[2 * u], t[2 * u + 1]);
}
void push(int u, int l, int r) {
t[u].ans = max(t[u].ans, lz[u].mx - t[u].mn);
t[u].ans = max(t[u].ans, t[u].mx - lz[u].mn);
if(l != r) {
for(int t = 0; t <= 1; t++)
lz[2 * u + t].mx = max(lz[2 * u + t].mx, lz[u].mx),
lz[2 * u + t].mn = min(lz[2 * u + t].mn, lz[u].mn);
}
lz[u] = {inf, 0};
}
void upd(int u, int id, int l, int r) {
if(lz[u].mx) push(u, l, r);
if(l > id || r < id) return;
if(l == r) {
if(t[u].mx) t[u].mx = 0, t[u].mn = inf;
else t[u].mx = h[l], t[u].mn = h[r];
return;
}
int mid = (l + r) / 2;
upd(2 * u, id, l, mid); upd(2 * u + 1, id, mid + 1, r);
t[u] = merge(t[2 * u], t[2 * u + 1]);
}
void upd(int u, int st, int en, int l, int r, int val) {
if(lz[u].mx) push(u, l, r);
if(l > en || r < st) return;
if(st <= l && r <= en) {
lz[u] = {val, val};
push(u, l, r);
return;
}
int mid = (l + r) / 2;
upd(2 * u, st, en, l, mid, val);
upd(2 * u + 1, st, en, mid + 1, r, val);
t[u] = merge(t[2 * u], t[2 * u + 1]);
}
int get(int u, int st, int en, int l, int r) {
if(lz[u].mx) push(u, l, r);
if(l > en || r < st) return -inf;
if(st <= l && r <= en) return t[u].ans;
int mid = (l + r) / 2;
return max(get(2 * u, st, en, l, mid), get(2 * u + 1, st, en, mid + 1, r));
}
signed main() {
int n;
cin >> n;
vector<int> l(n + 2), r(n + 2);
for(int i = 1; i <= n; i++) {
cin >> h[i] >> l[i] >> r[i];
if(i + l[i] <= n) add[i + l[i]].push_back(i), add[min(i + r[i] + 1, n + 1)].push_back(i);
}
build(1, 1, n);
int q; cin >> q;
for(int i = 1; i <= q; i++) {
int l, r; cin >> l >> r;
qry[r].push_back({l, i});
}
vector<int> ans(q + 1);
for(int i = 1; i <= n; i++) {
for(int j = 0; j < add[i].size(); j++) {
upd(1, add[i][j], 1, n);
}
upd(1, i - r[i], i - l[i], 1, n, h[i]);
for(int j = 0; j < qry[i].size(); j++) ans[qry[i][j].s] = get(1, qry[i][j].f, i, 1, n);
}
for(int i = 1; i <= q; i++) cout << (ans[i] < 0 ? -1 : ans[i]) << "\n";
}
Compilation message
antennas.cpp: In function 'int main()':
antennas.cpp:91:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
91 | for(int j = 0; j < add[i].size(); j++) {
| ~~^~~~~~~~~~~~~~~
antennas.cpp:95:26: 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]
95 | for(int j = 0; j < qry[i].size(); j++) ans[qry[i][j].s] = get(1, qry[i][j].f, i, 1, n);
| ~~^~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
9684 KB |
Output is correct |
2 |
Correct |
6 ms |
9684 KB |
Output is correct |
3 |
Correct |
6 ms |
9684 KB |
Output is correct |
4 |
Correct |
7 ms |
9684 KB |
Output is correct |
5 |
Correct |
6 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
7 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9736 KB |
Output is correct |
9 |
Correct |
6 ms |
9684 KB |
Output is correct |
10 |
Correct |
7 ms |
9716 KB |
Output is correct |
11 |
Correct |
5 ms |
9708 KB |
Output is correct |
12 |
Correct |
6 ms |
9684 KB |
Output is correct |
13 |
Correct |
6 ms |
9708 KB |
Output is correct |
14 |
Correct |
6 ms |
9704 KB |
Output is correct |
15 |
Correct |
6 ms |
9712 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9712 KB |
Output is correct |
18 |
Correct |
6 ms |
9684 KB |
Output is correct |
19 |
Correct |
6 ms |
9700 KB |
Output is correct |
20 |
Correct |
5 ms |
9684 KB |
Output is correct |
21 |
Correct |
6 ms |
9712 KB |
Output is correct |
22 |
Correct |
6 ms |
9712 KB |
Output is correct |
23 |
Correct |
6 ms |
9660 KB |
Output is correct |
24 |
Correct |
6 ms |
9720 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
9684 KB |
Output is correct |
2 |
Correct |
6 ms |
9684 KB |
Output is correct |
3 |
Correct |
6 ms |
9684 KB |
Output is correct |
4 |
Correct |
7 ms |
9684 KB |
Output is correct |
5 |
Correct |
6 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
7 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9736 KB |
Output is correct |
9 |
Correct |
6 ms |
9684 KB |
Output is correct |
10 |
Correct |
7 ms |
9716 KB |
Output is correct |
11 |
Correct |
5 ms |
9708 KB |
Output is correct |
12 |
Correct |
6 ms |
9684 KB |
Output is correct |
13 |
Correct |
6 ms |
9708 KB |
Output is correct |
14 |
Correct |
6 ms |
9704 KB |
Output is correct |
15 |
Correct |
6 ms |
9712 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9712 KB |
Output is correct |
18 |
Correct |
6 ms |
9684 KB |
Output is correct |
19 |
Correct |
6 ms |
9700 KB |
Output is correct |
20 |
Correct |
5 ms |
9684 KB |
Output is correct |
21 |
Correct |
6 ms |
9712 KB |
Output is correct |
22 |
Correct |
6 ms |
9712 KB |
Output is correct |
23 |
Correct |
6 ms |
9660 KB |
Output is correct |
24 |
Correct |
6 ms |
9720 KB |
Output is correct |
25 |
Correct |
116 ms |
16844 KB |
Output is correct |
26 |
Correct |
21 ms |
10736 KB |
Output is correct |
27 |
Correct |
148 ms |
19784 KB |
Output is correct |
28 |
Correct |
165 ms |
19916 KB |
Output is correct |
29 |
Correct |
108 ms |
16912 KB |
Output is correct |
30 |
Correct |
107 ms |
16572 KB |
Output is correct |
31 |
Correct |
134 ms |
18504 KB |
Output is correct |
32 |
Correct |
152 ms |
19872 KB |
Output is correct |
33 |
Correct |
140 ms |
19296 KB |
Output is correct |
34 |
Correct |
79 ms |
14692 KB |
Output is correct |
35 |
Correct |
145 ms |
19736 KB |
Output is correct |
36 |
Correct |
157 ms |
20000 KB |
Output is correct |
37 |
Correct |
89 ms |
15148 KB |
Output is correct |
38 |
Correct |
147 ms |
18932 KB |
Output is correct |
39 |
Correct |
31 ms |
11244 KB |
Output is correct |
40 |
Correct |
153 ms |
18916 KB |
Output is correct |
41 |
Correct |
109 ms |
16568 KB |
Output is correct |
42 |
Correct |
151 ms |
19008 KB |
Output is correct |
43 |
Correct |
60 ms |
12908 KB |
Output is correct |
44 |
Correct |
153 ms |
18924 KB |
Output is correct |
45 |
Correct |
31 ms |
11432 KB |
Output is correct |
46 |
Correct |
147 ms |
18980 KB |
Output is correct |
47 |
Correct |
49 ms |
12268 KB |
Output is correct |
48 |
Correct |
150 ms |
19004 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
360 ms |
37560 KB |
Output is correct |
2 |
Correct |
415 ms |
43064 KB |
Output is correct |
3 |
Correct |
276 ms |
39160 KB |
Output is correct |
4 |
Correct |
416 ms |
43256 KB |
Output is correct |
5 |
Correct |
169 ms |
25672 KB |
Output is correct |
6 |
Correct |
411 ms |
43048 KB |
Output is correct |
7 |
Correct |
344 ms |
41196 KB |
Output is correct |
8 |
Correct |
409 ms |
43004 KB |
Output is correct |
9 |
Correct |
53 ms |
14252 KB |
Output is correct |
10 |
Correct |
406 ms |
42972 KB |
Output is correct |
11 |
Correct |
246 ms |
27904 KB |
Output is correct |
12 |
Correct |
405 ms |
43004 KB |
Output is correct |
13 |
Correct |
279 ms |
41412 KB |
Output is correct |
14 |
Correct |
267 ms |
41340 KB |
Output is correct |
15 |
Correct |
257 ms |
41284 KB |
Output is correct |
16 |
Correct |
257 ms |
41924 KB |
Output is correct |
17 |
Correct |
267 ms |
41488 KB |
Output is correct |
18 |
Correct |
259 ms |
41900 KB |
Output is correct |
19 |
Correct |
269 ms |
41104 KB |
Output is correct |
20 |
Correct |
257 ms |
41564 KB |
Output is correct |
21 |
Correct |
264 ms |
41140 KB |
Output is correct |
22 |
Correct |
260 ms |
41408 KB |
Output is correct |
23 |
Correct |
259 ms |
41324 KB |
Output is correct |
24 |
Correct |
254 ms |
41520 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
9684 KB |
Output is correct |
2 |
Correct |
6 ms |
9684 KB |
Output is correct |
3 |
Correct |
6 ms |
9684 KB |
Output is correct |
4 |
Correct |
7 ms |
9684 KB |
Output is correct |
5 |
Correct |
6 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
7 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9736 KB |
Output is correct |
9 |
Correct |
6 ms |
9684 KB |
Output is correct |
10 |
Correct |
7 ms |
9716 KB |
Output is correct |
11 |
Correct |
5 ms |
9708 KB |
Output is correct |
12 |
Correct |
6 ms |
9684 KB |
Output is correct |
13 |
Correct |
6 ms |
9708 KB |
Output is correct |
14 |
Correct |
6 ms |
9704 KB |
Output is correct |
15 |
Correct |
6 ms |
9712 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9712 KB |
Output is correct |
18 |
Correct |
6 ms |
9684 KB |
Output is correct |
19 |
Correct |
6 ms |
9700 KB |
Output is correct |
20 |
Correct |
5 ms |
9684 KB |
Output is correct |
21 |
Correct |
6 ms |
9712 KB |
Output is correct |
22 |
Correct |
6 ms |
9712 KB |
Output is correct |
23 |
Correct |
6 ms |
9660 KB |
Output is correct |
24 |
Correct |
6 ms |
9720 KB |
Output is correct |
25 |
Correct |
116 ms |
16844 KB |
Output is correct |
26 |
Correct |
21 ms |
10736 KB |
Output is correct |
27 |
Correct |
148 ms |
19784 KB |
Output is correct |
28 |
Correct |
165 ms |
19916 KB |
Output is correct |
29 |
Correct |
108 ms |
16912 KB |
Output is correct |
30 |
Correct |
107 ms |
16572 KB |
Output is correct |
31 |
Correct |
134 ms |
18504 KB |
Output is correct |
32 |
Correct |
152 ms |
19872 KB |
Output is correct |
33 |
Correct |
140 ms |
19296 KB |
Output is correct |
34 |
Correct |
79 ms |
14692 KB |
Output is correct |
35 |
Correct |
145 ms |
19736 KB |
Output is correct |
36 |
Correct |
157 ms |
20000 KB |
Output is correct |
37 |
Correct |
89 ms |
15148 KB |
Output is correct |
38 |
Correct |
147 ms |
18932 KB |
Output is correct |
39 |
Correct |
31 ms |
11244 KB |
Output is correct |
40 |
Correct |
153 ms |
18916 KB |
Output is correct |
41 |
Correct |
109 ms |
16568 KB |
Output is correct |
42 |
Correct |
151 ms |
19008 KB |
Output is correct |
43 |
Correct |
60 ms |
12908 KB |
Output is correct |
44 |
Correct |
153 ms |
18924 KB |
Output is correct |
45 |
Correct |
31 ms |
11432 KB |
Output is correct |
46 |
Correct |
147 ms |
18980 KB |
Output is correct |
47 |
Correct |
49 ms |
12268 KB |
Output is correct |
48 |
Correct |
150 ms |
19004 KB |
Output is correct |
49 |
Correct |
360 ms |
37560 KB |
Output is correct |
50 |
Correct |
415 ms |
43064 KB |
Output is correct |
51 |
Correct |
276 ms |
39160 KB |
Output is correct |
52 |
Correct |
416 ms |
43256 KB |
Output is correct |
53 |
Correct |
169 ms |
25672 KB |
Output is correct |
54 |
Correct |
411 ms |
43048 KB |
Output is correct |
55 |
Correct |
344 ms |
41196 KB |
Output is correct |
56 |
Correct |
409 ms |
43004 KB |
Output is correct |
57 |
Correct |
53 ms |
14252 KB |
Output is correct |
58 |
Correct |
406 ms |
42972 KB |
Output is correct |
59 |
Correct |
246 ms |
27904 KB |
Output is correct |
60 |
Correct |
405 ms |
43004 KB |
Output is correct |
61 |
Correct |
279 ms |
41412 KB |
Output is correct |
62 |
Correct |
267 ms |
41340 KB |
Output is correct |
63 |
Correct |
257 ms |
41284 KB |
Output is correct |
64 |
Correct |
257 ms |
41924 KB |
Output is correct |
65 |
Correct |
267 ms |
41488 KB |
Output is correct |
66 |
Correct |
259 ms |
41900 KB |
Output is correct |
67 |
Correct |
269 ms |
41104 KB |
Output is correct |
68 |
Correct |
257 ms |
41564 KB |
Output is correct |
69 |
Correct |
264 ms |
41140 KB |
Output is correct |
70 |
Correct |
260 ms |
41408 KB |
Output is correct |
71 |
Correct |
259 ms |
41324 KB |
Output is correct |
72 |
Correct |
254 ms |
41520 KB |
Output is correct |
73 |
Correct |
612 ms |
50108 KB |
Output is correct |
74 |
Correct |
427 ms |
43768 KB |
Output is correct |
75 |
Correct |
582 ms |
50348 KB |
Output is correct |
76 |
Correct |
756 ms |
54328 KB |
Output is correct |
77 |
Correct |
358 ms |
33756 KB |
Output is correct |
78 |
Correct |
595 ms |
50628 KB |
Output is correct |
79 |
Correct |
668 ms |
52548 KB |
Output is correct |
80 |
Correct |
709 ms |
54288 KB |
Output is correct |
81 |
Correct |
252 ms |
24416 KB |
Output is correct |
82 |
Correct |
560 ms |
48500 KB |
Output is correct |
83 |
Correct |
515 ms |
38816 KB |
Output is correct |
84 |
Correct |
764 ms |
54336 KB |
Output is correct |
85 |
Correct |
522 ms |
47172 KB |
Output is correct |
86 |
Correct |
530 ms |
51432 KB |
Output is correct |
87 |
Correct |
293 ms |
42888 KB |
Output is correct |
88 |
Correct |
510 ms |
52048 KB |
Output is correct |
89 |
Correct |
458 ms |
48892 KB |
Output is correct |
90 |
Correct |
522 ms |
52132 KB |
Output is correct |
91 |
Correct |
343 ms |
44604 KB |
Output is correct |
92 |
Correct |
519 ms |
51388 KB |
Output is correct |
93 |
Correct |
299 ms |
42936 KB |
Output is correct |
94 |
Correct |
520 ms |
51632 KB |
Output is correct |
95 |
Correct |
334 ms |
43972 KB |
Output is correct |
96 |
Correct |
595 ms |
51476 KB |
Output is correct |