#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 7;
const int INF = 1e9 + 1010;
int n, q;
int h[N], a[N], b[N];
int L[N], R[N];
int ans[N];
int c[N];
int t[4 * N]; // max d[i]
int min_h[4 * N];
int max_c[4 * N];
vector<pair<int, int>> events[N];
vector<int> here[N];
void upd(int i, int val) {
/*if (i == 9 && val == 3) {
cout << max_c[i] << endl;
}*/
min_h[i] = min(min_h[i], val);
t[i] = max(t[i], max_c[i] - min_h[i]);
/*if (i == 9 && val == 3) {
cout << t[i] << " " << max_c[i] << " " << min_h[i] << endl;
}*/
}
void push(int i) {
upd(2 * i, min_h[i]);
upd(2 * i + 1, min_h[i]);
min_h[i] = INF;
}
void pull(int i) {
max_c[i] = max(max_c[2 * i], max_c[2 * i + 1]);
t[i] = max({t[i], max_c[i] - min_h[i], t[2 * i], t[2 * i + 1]});
}
void upd_seg(int i, int l, int r, int ql, int qr, int val) {
if (l >= qr || r <= ql)
return;
if (l >= ql && r <= qr) {
/*if (val == 3) {
cout << i << " " << l << " " << r << endl;
}*/
upd(i, val);
/*if (val == 3) {
cout << t[i] << endl;
}*/
return;
}
push(i);
int m = (l + r) / 2;
upd_seg(2 * i, l, m, ql, qr, val);
upd_seg(2 * i + 1, m, r, ql, qr, val);
pull(i);
}
void upd_c(int i, int l, int r, int pos, int new_c) {
if (r - l == 1) {
min_h[i] = INF;
c[pos] = max_c[i] = new_c;
} else {
push(i);
int m = (l + r) / 2;
if (pos < m)
upd_c(2 * i, l, m, pos, new_c);
else
upd_c(2 * i + 1, m, r, pos, new_c);
pull(i);
}
}
int get_max(int i, int l, int r, int ql, int qr) {
if (l >= qr || r <= ql)
return -1;
if (l >= ql && r <= qr) {
//cout << i << " " << l << " " << r << " " << t[i] << endl;
return t[i];
}
push(i);
int m = (l + r) / 2;
return max(get_max(2 * i, l, m, ql, qr), get_max(2 * i + 1, m, r, ql, qr));
}
void build(int i, int l, int r) {
min_h[i] = INF;
max_c[i] = -1;
t[i] = -1;
if (r - l == 1) {
c[l] = -1;
} else {
int m = (l + r) / 2;
build(2 * i, l, m);
build(2 * i + 1, m, r);
}
}
void solve() {
for (int i = 0; i <= n; i++) {
events[i].clear();
here[i].clear();
}
for (int i = 0; i < n; i++) {
int l = i + a[i], r = min(n, i + b[i] + 1);
if (l < r) {
events[l].emplace_back(i, h[i]);
events[r].emplace_back(i, -INF);
}
}
for (int i = 0; i < q; i++)
here[R[i]].push_back(i);
build(1, 0, n);
for (int i = 0; i <= n; i++) {
for (int qid : here[i])
ans[qid] = max(ans[qid], get_max(1, 0, n, L[qid], R[qid]));
for (auto [pos, new_c] : events[i]) {
//cout << "upd_c " << pos << " " << new_c << endl;
upd_c(1, 0, n, pos, new_c);
}
if (i != n) {
int l = max(0, i - b[i]), r = i - a[i] + 1;
//cout << "segadd " << i << " " << l << " " << r << " " << h[i] << endl;
/*if (h[i] == 3)
cout << l << " " << r << endl;*/
if (l < r)
upd_seg(1, 0, n, l, r, h[i]);
}
}
}
int main() {
#ifdef LOCAL
freopen("input.txt", "r", stdin);
#endif
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n;
for (int i = 0; i < n; i++)
cin >> h[i] >> a[i] >> b[i];
cin >> q;
for (int i = 0; i < q; i++) {
cin >> L[i] >> R[i];
L[i]--;
ans[i] = -1;
}
for (int _ = 0; _ < 2; _++) {
solve();
reverse(h, h + n);
reverse(a, a + n);
reverse(b, b + n);
for (int i = 0; i < q; i++) {
R[i]--;
L[i] = n - 1 - L[i];
R[i] = n - 1 - R[i];
swap(L[i], R[i]);
R[i]++;
}
}
for (int i = 0; i < q; i++)
cout << ans[i] << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
14444 KB |
Output is correct |
2 |
Correct |
11 ms |
14572 KB |
Output is correct |
3 |
Correct |
12 ms |
14572 KB |
Output is correct |
4 |
Correct |
11 ms |
14572 KB |
Output is correct |
5 |
Correct |
10 ms |
14572 KB |
Output is correct |
6 |
Correct |
12 ms |
14572 KB |
Output is correct |
7 |
Correct |
12 ms |
14572 KB |
Output is correct |
8 |
Correct |
12 ms |
14564 KB |
Output is correct |
9 |
Correct |
11 ms |
14572 KB |
Output is correct |
10 |
Correct |
13 ms |
14572 KB |
Output is correct |
11 |
Correct |
12 ms |
14476 KB |
Output is correct |
12 |
Correct |
11 ms |
14572 KB |
Output is correct |
13 |
Correct |
10 ms |
14572 KB |
Output is correct |
14 |
Correct |
11 ms |
14572 KB |
Output is correct |
15 |
Correct |
11 ms |
14572 KB |
Output is correct |
16 |
Correct |
12 ms |
14572 KB |
Output is correct |
17 |
Correct |
12 ms |
14572 KB |
Output is correct |
18 |
Correct |
11 ms |
14572 KB |
Output is correct |
19 |
Correct |
10 ms |
14572 KB |
Output is correct |
20 |
Correct |
11 ms |
14572 KB |
Output is correct |
21 |
Correct |
10 ms |
14572 KB |
Output is correct |
22 |
Correct |
11 ms |
14572 KB |
Output is correct |
23 |
Correct |
12 ms |
14572 KB |
Output is correct |
24 |
Correct |
12 ms |
14572 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
14444 KB |
Output is correct |
2 |
Correct |
11 ms |
14572 KB |
Output is correct |
3 |
Correct |
12 ms |
14572 KB |
Output is correct |
4 |
Correct |
11 ms |
14572 KB |
Output is correct |
5 |
Correct |
10 ms |
14572 KB |
Output is correct |
6 |
Correct |
12 ms |
14572 KB |
Output is correct |
7 |
Correct |
12 ms |
14572 KB |
Output is correct |
8 |
Correct |
12 ms |
14564 KB |
Output is correct |
9 |
Correct |
11 ms |
14572 KB |
Output is correct |
10 |
Correct |
13 ms |
14572 KB |
Output is correct |
11 |
Correct |
12 ms |
14476 KB |
Output is correct |
12 |
Correct |
11 ms |
14572 KB |
Output is correct |
13 |
Correct |
10 ms |
14572 KB |
Output is correct |
14 |
Correct |
11 ms |
14572 KB |
Output is correct |
15 |
Correct |
11 ms |
14572 KB |
Output is correct |
16 |
Correct |
12 ms |
14572 KB |
Output is correct |
17 |
Correct |
12 ms |
14572 KB |
Output is correct |
18 |
Correct |
11 ms |
14572 KB |
Output is correct |
19 |
Correct |
10 ms |
14572 KB |
Output is correct |
20 |
Correct |
11 ms |
14572 KB |
Output is correct |
21 |
Correct |
10 ms |
14572 KB |
Output is correct |
22 |
Correct |
11 ms |
14572 KB |
Output is correct |
23 |
Correct |
12 ms |
14572 KB |
Output is correct |
24 |
Correct |
12 ms |
14572 KB |
Output is correct |
25 |
Correct |
144 ms |
19948 KB |
Output is correct |
26 |
Correct |
32 ms |
15360 KB |
Output is correct |
27 |
Correct |
211 ms |
22380 KB |
Output is correct |
28 |
Correct |
210 ms |
22252 KB |
Output is correct |
29 |
Correct |
142 ms |
20076 KB |
Output is correct |
30 |
Correct |
145 ms |
19820 KB |
Output is correct |
31 |
Correct |
156 ms |
21484 KB |
Output is correct |
32 |
Correct |
211 ms |
22124 KB |
Output is correct |
33 |
Correct |
178 ms |
21868 KB |
Output is correct |
34 |
Correct |
108 ms |
18548 KB |
Output is correct |
35 |
Correct |
210 ms |
22404 KB |
Output is correct |
36 |
Correct |
206 ms |
22124 KB |
Output is correct |
37 |
Correct |
122 ms |
18540 KB |
Output is correct |
38 |
Correct |
207 ms |
21228 KB |
Output is correct |
39 |
Correct |
46 ms |
15724 KB |
Output is correct |
40 |
Correct |
194 ms |
21356 KB |
Output is correct |
41 |
Correct |
153 ms |
19564 KB |
Output is correct |
42 |
Correct |
221 ms |
21228 KB |
Output is correct |
43 |
Correct |
78 ms |
16876 KB |
Output is correct |
44 |
Correct |
215 ms |
21356 KB |
Output is correct |
45 |
Correct |
43 ms |
15992 KB |
Output is correct |
46 |
Correct |
204 ms |
21288 KB |
Output is correct |
47 |
Correct |
58 ms |
16364 KB |
Output is correct |
48 |
Correct |
195 ms |
21228 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
472 ms |
28784 KB |
Output is correct |
2 |
Correct |
516 ms |
29540 KB |
Output is correct |
3 |
Correct |
338 ms |
27112 KB |
Output is correct |
4 |
Correct |
511 ms |
29540 KB |
Output is correct |
5 |
Correct |
204 ms |
22120 KB |
Output is correct |
6 |
Correct |
610 ms |
29632 KB |
Output is correct |
7 |
Correct |
423 ms |
28516 KB |
Output is correct |
8 |
Correct |
568 ms |
29552 KB |
Output is correct |
9 |
Correct |
74 ms |
17260 KB |
Output is correct |
10 |
Correct |
497 ms |
29668 KB |
Output is correct |
11 |
Correct |
311 ms |
23552 KB |
Output is correct |
12 |
Correct |
494 ms |
29540 KB |
Output is correct |
13 |
Correct |
386 ms |
29792 KB |
Output is correct |
14 |
Correct |
361 ms |
29488 KB |
Output is correct |
15 |
Correct |
348 ms |
28600 KB |
Output is correct |
16 |
Correct |
362 ms |
28876 KB |
Output is correct |
17 |
Correct |
470 ms |
30364 KB |
Output is correct |
18 |
Correct |
484 ms |
29292 KB |
Output is correct |
19 |
Correct |
392 ms |
29412 KB |
Output is correct |
20 |
Correct |
378 ms |
29148 KB |
Output is correct |
21 |
Correct |
359 ms |
29468 KB |
Output is correct |
22 |
Correct |
374 ms |
29308 KB |
Output is correct |
23 |
Correct |
418 ms |
29668 KB |
Output is correct |
24 |
Correct |
329 ms |
27972 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
10 ms |
14444 KB |
Output is correct |
2 |
Correct |
11 ms |
14572 KB |
Output is correct |
3 |
Correct |
12 ms |
14572 KB |
Output is correct |
4 |
Correct |
11 ms |
14572 KB |
Output is correct |
5 |
Correct |
10 ms |
14572 KB |
Output is correct |
6 |
Correct |
12 ms |
14572 KB |
Output is correct |
7 |
Correct |
12 ms |
14572 KB |
Output is correct |
8 |
Correct |
12 ms |
14564 KB |
Output is correct |
9 |
Correct |
11 ms |
14572 KB |
Output is correct |
10 |
Correct |
13 ms |
14572 KB |
Output is correct |
11 |
Correct |
12 ms |
14476 KB |
Output is correct |
12 |
Correct |
11 ms |
14572 KB |
Output is correct |
13 |
Correct |
10 ms |
14572 KB |
Output is correct |
14 |
Correct |
11 ms |
14572 KB |
Output is correct |
15 |
Correct |
11 ms |
14572 KB |
Output is correct |
16 |
Correct |
12 ms |
14572 KB |
Output is correct |
17 |
Correct |
12 ms |
14572 KB |
Output is correct |
18 |
Correct |
11 ms |
14572 KB |
Output is correct |
19 |
Correct |
10 ms |
14572 KB |
Output is correct |
20 |
Correct |
11 ms |
14572 KB |
Output is correct |
21 |
Correct |
10 ms |
14572 KB |
Output is correct |
22 |
Correct |
11 ms |
14572 KB |
Output is correct |
23 |
Correct |
12 ms |
14572 KB |
Output is correct |
24 |
Correct |
12 ms |
14572 KB |
Output is correct |
25 |
Correct |
144 ms |
19948 KB |
Output is correct |
26 |
Correct |
32 ms |
15360 KB |
Output is correct |
27 |
Correct |
211 ms |
22380 KB |
Output is correct |
28 |
Correct |
210 ms |
22252 KB |
Output is correct |
29 |
Correct |
142 ms |
20076 KB |
Output is correct |
30 |
Correct |
145 ms |
19820 KB |
Output is correct |
31 |
Correct |
156 ms |
21484 KB |
Output is correct |
32 |
Correct |
211 ms |
22124 KB |
Output is correct |
33 |
Correct |
178 ms |
21868 KB |
Output is correct |
34 |
Correct |
108 ms |
18548 KB |
Output is correct |
35 |
Correct |
210 ms |
22404 KB |
Output is correct |
36 |
Correct |
206 ms |
22124 KB |
Output is correct |
37 |
Correct |
122 ms |
18540 KB |
Output is correct |
38 |
Correct |
207 ms |
21228 KB |
Output is correct |
39 |
Correct |
46 ms |
15724 KB |
Output is correct |
40 |
Correct |
194 ms |
21356 KB |
Output is correct |
41 |
Correct |
153 ms |
19564 KB |
Output is correct |
42 |
Correct |
221 ms |
21228 KB |
Output is correct |
43 |
Correct |
78 ms |
16876 KB |
Output is correct |
44 |
Correct |
215 ms |
21356 KB |
Output is correct |
45 |
Correct |
43 ms |
15992 KB |
Output is correct |
46 |
Correct |
204 ms |
21288 KB |
Output is correct |
47 |
Correct |
58 ms |
16364 KB |
Output is correct |
48 |
Correct |
195 ms |
21228 KB |
Output is correct |
49 |
Correct |
472 ms |
28784 KB |
Output is correct |
50 |
Correct |
516 ms |
29540 KB |
Output is correct |
51 |
Correct |
338 ms |
27112 KB |
Output is correct |
52 |
Correct |
511 ms |
29540 KB |
Output is correct |
53 |
Correct |
204 ms |
22120 KB |
Output is correct |
54 |
Correct |
610 ms |
29632 KB |
Output is correct |
55 |
Correct |
423 ms |
28516 KB |
Output is correct |
56 |
Correct |
568 ms |
29552 KB |
Output is correct |
57 |
Correct |
74 ms |
17260 KB |
Output is correct |
58 |
Correct |
497 ms |
29668 KB |
Output is correct |
59 |
Correct |
311 ms |
23552 KB |
Output is correct |
60 |
Correct |
494 ms |
29540 KB |
Output is correct |
61 |
Correct |
386 ms |
29792 KB |
Output is correct |
62 |
Correct |
361 ms |
29488 KB |
Output is correct |
63 |
Correct |
348 ms |
28600 KB |
Output is correct |
64 |
Correct |
362 ms |
28876 KB |
Output is correct |
65 |
Correct |
470 ms |
30364 KB |
Output is correct |
66 |
Correct |
484 ms |
29292 KB |
Output is correct |
67 |
Correct |
392 ms |
29412 KB |
Output is correct |
68 |
Correct |
378 ms |
29148 KB |
Output is correct |
69 |
Correct |
359 ms |
29468 KB |
Output is correct |
70 |
Correct |
374 ms |
29308 KB |
Output is correct |
71 |
Correct |
418 ms |
29668 KB |
Output is correct |
72 |
Correct |
329 ms |
27972 KB |
Output is correct |
73 |
Correct |
869 ms |
41724 KB |
Output is correct |
74 |
Correct |
550 ms |
34788 KB |
Output is correct |
75 |
Correct |
783 ms |
40424 KB |
Output is correct |
76 |
Correct |
1032 ms |
45388 KB |
Output is correct |
77 |
Correct |
487 ms |
31080 KB |
Output is correct |
78 |
Correct |
901 ms |
42332 KB |
Output is correct |
79 |
Correct |
968 ms |
43236 KB |
Output is correct |
80 |
Correct |
1016 ms |
45436 KB |
Output is correct |
81 |
Correct |
379 ms |
25708 KB |
Output is correct |
82 |
Correct |
742 ms |
40164 KB |
Output is correct |
83 |
Correct |
707 ms |
36200 KB |
Output is correct |
84 |
Correct |
1028 ms |
45540 KB |
Output is correct |
85 |
Correct |
698 ms |
40840 KB |
Output is correct |
86 |
Correct |
875 ms |
44168 KB |
Output is correct |
87 |
Correct |
408 ms |
34400 KB |
Output is correct |
88 |
Correct |
831 ms |
43284 KB |
Output is correct |
89 |
Correct |
779 ms |
42780 KB |
Output is correct |
90 |
Correct |
932 ms |
43748 KB |
Output is correct |
91 |
Correct |
537 ms |
37596 KB |
Output is correct |
92 |
Correct |
850 ms |
43868 KB |
Output is correct |
93 |
Correct |
463 ms |
35924 KB |
Output is correct |
94 |
Correct |
865 ms |
43996 KB |
Output is correct |
95 |
Correct |
497 ms |
37092 KB |
Output is correct |
96 |
Correct |
802 ms |
42824 KB |
Output is correct |