#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() {
ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
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:92:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
92 | for(int j = 0; j < add[i].size(); j++) {
| ~~^~~~~~~~~~~~~~~
antennas.cpp:96:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
96 | 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 |
5 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 |
6 ms |
9756 KB |
Output is correct |
5 |
Correct |
5 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
6 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9684 KB |
Output is correct |
9 |
Correct |
5 ms |
9684 KB |
Output is correct |
10 |
Correct |
5 ms |
9684 KB |
Output is correct |
11 |
Correct |
5 ms |
9684 KB |
Output is correct |
12 |
Correct |
5 ms |
9684 KB |
Output is correct |
13 |
Correct |
5 ms |
9684 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
15 |
Correct |
5 ms |
9684 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9684 KB |
Output is correct |
18 |
Correct |
5 ms |
9708 KB |
Output is correct |
19 |
Correct |
5 ms |
9684 KB |
Output is correct |
20 |
Correct |
6 ms |
9684 KB |
Output is correct |
21 |
Correct |
5 ms |
9684 KB |
Output is correct |
22 |
Correct |
5 ms |
9684 KB |
Output is correct |
23 |
Correct |
5 ms |
9684 KB |
Output is correct |
24 |
Correct |
5 ms |
9684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 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 |
6 ms |
9756 KB |
Output is correct |
5 |
Correct |
5 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
6 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9684 KB |
Output is correct |
9 |
Correct |
5 ms |
9684 KB |
Output is correct |
10 |
Correct |
5 ms |
9684 KB |
Output is correct |
11 |
Correct |
5 ms |
9684 KB |
Output is correct |
12 |
Correct |
5 ms |
9684 KB |
Output is correct |
13 |
Correct |
5 ms |
9684 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
15 |
Correct |
5 ms |
9684 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9684 KB |
Output is correct |
18 |
Correct |
5 ms |
9708 KB |
Output is correct |
19 |
Correct |
5 ms |
9684 KB |
Output is correct |
20 |
Correct |
6 ms |
9684 KB |
Output is correct |
21 |
Correct |
5 ms |
9684 KB |
Output is correct |
22 |
Correct |
5 ms |
9684 KB |
Output is correct |
23 |
Correct |
5 ms |
9684 KB |
Output is correct |
24 |
Correct |
5 ms |
9684 KB |
Output is correct |
25 |
Correct |
61 ms |
13412 KB |
Output is correct |
26 |
Correct |
13 ms |
10228 KB |
Output is correct |
27 |
Correct |
87 ms |
14836 KB |
Output is correct |
28 |
Correct |
90 ms |
14836 KB |
Output is correct |
29 |
Correct |
58 ms |
13392 KB |
Output is correct |
30 |
Correct |
64 ms |
13132 KB |
Output is correct |
31 |
Correct |
69 ms |
14136 KB |
Output is correct |
32 |
Correct |
96 ms |
14932 KB |
Output is correct |
33 |
Correct |
83 ms |
14540 KB |
Output is correct |
34 |
Correct |
49 ms |
12156 KB |
Output is correct |
35 |
Correct |
86 ms |
14800 KB |
Output is correct |
36 |
Correct |
94 ms |
14828 KB |
Output is correct |
37 |
Correct |
53 ms |
12184 KB |
Output is correct |
38 |
Correct |
83 ms |
13848 KB |
Output is correct |
39 |
Correct |
18 ms |
10324 KB |
Output is correct |
40 |
Correct |
85 ms |
13816 KB |
Output is correct |
41 |
Correct |
62 ms |
12752 KB |
Output is correct |
42 |
Correct |
84 ms |
13852 KB |
Output is correct |
43 |
Correct |
32 ms |
11084 KB |
Output is correct |
44 |
Correct |
83 ms |
13868 KB |
Output is correct |
45 |
Correct |
20 ms |
10436 KB |
Output is correct |
46 |
Correct |
82 ms |
13896 KB |
Output is correct |
47 |
Correct |
26 ms |
10880 KB |
Output is correct |
48 |
Correct |
83 ms |
13940 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
217 ms |
24904 KB |
Output is correct |
2 |
Correct |
241 ms |
25440 KB |
Output is correct |
3 |
Correct |
157 ms |
23880 KB |
Output is correct |
4 |
Correct |
242 ms |
25364 KB |
Output is correct |
5 |
Correct |
111 ms |
17300 KB |
Output is correct |
6 |
Correct |
255 ms |
25444 KB |
Output is correct |
7 |
Correct |
206 ms |
24636 KB |
Output is correct |
8 |
Correct |
241 ms |
25376 KB |
Output is correct |
9 |
Correct |
36 ms |
11860 KB |
Output is correct |
10 |
Correct |
272 ms |
25500 KB |
Output is correct |
11 |
Correct |
134 ms |
18292 KB |
Output is correct |
12 |
Correct |
239 ms |
25456 KB |
Output is correct |
13 |
Correct |
151 ms |
23328 KB |
Output is correct |
14 |
Correct |
139 ms |
23568 KB |
Output is correct |
15 |
Correct |
141 ms |
23560 KB |
Output is correct |
16 |
Correct |
132 ms |
23920 KB |
Output is correct |
17 |
Correct |
154 ms |
23672 KB |
Output is correct |
18 |
Correct |
144 ms |
23952 KB |
Output is correct |
19 |
Correct |
148 ms |
23328 KB |
Output is correct |
20 |
Correct |
139 ms |
23556 KB |
Output is correct |
21 |
Correct |
143 ms |
23216 KB |
Output is correct |
22 |
Correct |
141 ms |
23712 KB |
Output is correct |
23 |
Correct |
148 ms |
23316 KB |
Output is correct |
24 |
Correct |
135 ms |
23468 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 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 |
6 ms |
9756 KB |
Output is correct |
5 |
Correct |
5 ms |
9684 KB |
Output is correct |
6 |
Correct |
6 ms |
9684 KB |
Output is correct |
7 |
Correct |
6 ms |
9684 KB |
Output is correct |
8 |
Correct |
6 ms |
9684 KB |
Output is correct |
9 |
Correct |
5 ms |
9684 KB |
Output is correct |
10 |
Correct |
5 ms |
9684 KB |
Output is correct |
11 |
Correct |
5 ms |
9684 KB |
Output is correct |
12 |
Correct |
5 ms |
9684 KB |
Output is correct |
13 |
Correct |
5 ms |
9684 KB |
Output is correct |
14 |
Correct |
5 ms |
9684 KB |
Output is correct |
15 |
Correct |
5 ms |
9684 KB |
Output is correct |
16 |
Correct |
6 ms |
9684 KB |
Output is correct |
17 |
Correct |
5 ms |
9684 KB |
Output is correct |
18 |
Correct |
5 ms |
9708 KB |
Output is correct |
19 |
Correct |
5 ms |
9684 KB |
Output is correct |
20 |
Correct |
6 ms |
9684 KB |
Output is correct |
21 |
Correct |
5 ms |
9684 KB |
Output is correct |
22 |
Correct |
5 ms |
9684 KB |
Output is correct |
23 |
Correct |
5 ms |
9684 KB |
Output is correct |
24 |
Correct |
5 ms |
9684 KB |
Output is correct |
25 |
Correct |
61 ms |
13412 KB |
Output is correct |
26 |
Correct |
13 ms |
10228 KB |
Output is correct |
27 |
Correct |
87 ms |
14836 KB |
Output is correct |
28 |
Correct |
90 ms |
14836 KB |
Output is correct |
29 |
Correct |
58 ms |
13392 KB |
Output is correct |
30 |
Correct |
64 ms |
13132 KB |
Output is correct |
31 |
Correct |
69 ms |
14136 KB |
Output is correct |
32 |
Correct |
96 ms |
14932 KB |
Output is correct |
33 |
Correct |
83 ms |
14540 KB |
Output is correct |
34 |
Correct |
49 ms |
12156 KB |
Output is correct |
35 |
Correct |
86 ms |
14800 KB |
Output is correct |
36 |
Correct |
94 ms |
14828 KB |
Output is correct |
37 |
Correct |
53 ms |
12184 KB |
Output is correct |
38 |
Correct |
83 ms |
13848 KB |
Output is correct |
39 |
Correct |
18 ms |
10324 KB |
Output is correct |
40 |
Correct |
85 ms |
13816 KB |
Output is correct |
41 |
Correct |
62 ms |
12752 KB |
Output is correct |
42 |
Correct |
84 ms |
13852 KB |
Output is correct |
43 |
Correct |
32 ms |
11084 KB |
Output is correct |
44 |
Correct |
83 ms |
13868 KB |
Output is correct |
45 |
Correct |
20 ms |
10436 KB |
Output is correct |
46 |
Correct |
82 ms |
13896 KB |
Output is correct |
47 |
Correct |
26 ms |
10880 KB |
Output is correct |
48 |
Correct |
83 ms |
13940 KB |
Output is correct |
49 |
Correct |
217 ms |
24904 KB |
Output is correct |
50 |
Correct |
241 ms |
25440 KB |
Output is correct |
51 |
Correct |
157 ms |
23880 KB |
Output is correct |
52 |
Correct |
242 ms |
25364 KB |
Output is correct |
53 |
Correct |
111 ms |
17300 KB |
Output is correct |
54 |
Correct |
255 ms |
25444 KB |
Output is correct |
55 |
Correct |
206 ms |
24636 KB |
Output is correct |
56 |
Correct |
241 ms |
25376 KB |
Output is correct |
57 |
Correct |
36 ms |
11860 KB |
Output is correct |
58 |
Correct |
272 ms |
25500 KB |
Output is correct |
59 |
Correct |
134 ms |
18292 KB |
Output is correct |
60 |
Correct |
239 ms |
25456 KB |
Output is correct |
61 |
Correct |
151 ms |
23328 KB |
Output is correct |
62 |
Correct |
139 ms |
23568 KB |
Output is correct |
63 |
Correct |
141 ms |
23560 KB |
Output is correct |
64 |
Correct |
132 ms |
23920 KB |
Output is correct |
65 |
Correct |
154 ms |
23672 KB |
Output is correct |
66 |
Correct |
144 ms |
23952 KB |
Output is correct |
67 |
Correct |
148 ms |
23328 KB |
Output is correct |
68 |
Correct |
139 ms |
23556 KB |
Output is correct |
69 |
Correct |
143 ms |
23216 KB |
Output is correct |
70 |
Correct |
141 ms |
23712 KB |
Output is correct |
71 |
Correct |
148 ms |
23316 KB |
Output is correct |
72 |
Correct |
135 ms |
23468 KB |
Output is correct |
73 |
Correct |
362 ms |
29848 KB |
Output is correct |
74 |
Correct |
254 ms |
26060 KB |
Output is correct |
75 |
Correct |
329 ms |
29928 KB |
Output is correct |
76 |
Correct |
434 ms |
31948 KB |
Output is correct |
77 |
Correct |
223 ms |
21836 KB |
Output is correct |
78 |
Correct |
393 ms |
29988 KB |
Output is correct |
79 |
Correct |
392 ms |
31008 KB |
Output is correct |
80 |
Correct |
460 ms |
31880 KB |
Output is correct |
81 |
Correct |
157 ms |
17036 KB |
Output is correct |
82 |
Correct |
334 ms |
28996 KB |
Output is correct |
83 |
Correct |
301 ms |
24336 KB |
Output is correct |
84 |
Correct |
430 ms |
31956 KB |
Output is correct |
85 |
Correct |
262 ms |
26744 KB |
Output is correct |
86 |
Correct |
323 ms |
28752 KB |
Output is correct |
87 |
Correct |
180 ms |
24416 KB |
Output is correct |
88 |
Correct |
289 ms |
29136 KB |
Output is correct |
89 |
Correct |
291 ms |
27712 KB |
Output is correct |
90 |
Correct |
298 ms |
29296 KB |
Output is correct |
91 |
Correct |
206 ms |
25344 KB |
Output is correct |
92 |
Correct |
330 ms |
28752 KB |
Output is correct |
93 |
Correct |
161 ms |
24492 KB |
Output is correct |
94 |
Correct |
314 ms |
28916 KB |
Output is correct |
95 |
Correct |
192 ms |
25020 KB |
Output is correct |
96 |
Correct |
294 ms |
28744 KB |
Output is correct |