#include <bits/stdc++.h>
const int INF = 1e9;
template <class T> struct LazySeg {
int sz;
std::vector<T> c; // stores max of c
std::vector<T> d; // stores max of d
std::vector<T> lazy; // stores what you subtract max with
void init(int n) {
sz = 1;
while (sz < n) sz *= 2;
c.assign(2 * sz, -INF);
d.assign(2 * sz, -INF);
lazy.assign(2 * sz, -INF);
}
void pull(int ind) {
c[ind] = std::max(c[2 * ind], c[2 * ind + 1]);
d[ind] = std::max(d[2 * ind], d[2 * ind + 1]);
}
void push(int ind, int L, int R) {
d[ind] = std::max(d[ind], c[ind] + lazy[ind]);
if (L != R) {
lazy[2 * ind] = std::max(lazy[2 * ind], lazy[ind]);
lazy[2 * ind + 1] = std::max(lazy[2 * ind + 1], lazy[ind]);
}
lazy[ind] = -INF;
}
void set(int p, T val, int ind = 1, int L = 0, int R = -1) {
if (R == -1) R += sz;
push(ind, L, R);
if (p < L || R < p) return;
if (L == R) {
c[ind] = val;
// push(ind, L, R);
return;
}
int M = (L + R) / 2;
set(p, val, 2 * ind, L, M);
set(p, val, 2 * ind + 1, M + 1, R);
pull(ind);
}
void set_max(int lo, int hi, T val, int ind = 1, int L = 0, int R = -1) {
if (R == -1) R += sz;
push(ind, L, R);
if (R < lo || hi < L) return;
if (lo <= L && R <= hi) {
lazy[ind] = val;
push(ind, L, R);
return;
}
int M = (L + R) / 2;
set_max(lo, hi, val, 2 * ind, L, M);
set_max(lo, hi, val, 2 * ind + 1, M + 1, R);
pull(ind);
}
T qmax(int t, int lo, int hi, int ind = 1, int L = 0, int R = -1) {
if (R == -1) R += sz;
push(ind, L, R);
if (R < lo || hi < L) return -INF;
if (lo <= L && R <= hi) return (t == 0 ? c[ind] : d[ind]);
int M = (L + R) / 2;
return std::max(qmax(t, lo, hi, 2 * ind, L, M), qmax(t, lo, hi, 2 * ind + 1, M + 1, R));
}
};
int main() {
using namespace std;
ios_base::sync_with_stdio(0);
int n; cin >> n;
vector<int> h(n), a(n), b(n);
for (int i = 0; i < n; i++)
cin >> h[i] >> a[i] >> b[i];
int q; cin >> q;
vector<array<int, 2>> queries(q);
for (int i = 0; i < q; i++)
cin >> queries[i][0] >> queries[i][1], queries[i][0]--, queries[i][1]--;
vector<int> ans(q, -1);
LazySeg<int> seg;
int tt = 0;
auto solve = [&]() {
tt++;
seg.init(n);
vector<vector<array<int, 2>>> events(n);
for (int i = 0; i < n; i++) {
if (i + a[i] < n)
events[i + a[i]].push_back({1, i});
if (i + b[i] < n)
events[i + b[i]].push_back({3, i});
events[i].push_back({2, i});
}
for (int i = 0; i < q; i++)
events[queries[i][1]].push_back({4, i});
for (auto& v : events)
sort(v.begin(), v.end());
for (int j = 0; j < n; j++) {
for (auto& e : events[j]) {
int id = e[1];
if (e[0] == 1) {
seg.set(id, h[id]);
} else if (e[0] == 2) {
int l = max(0, j - b[id]);
int r = j - a[id];
if (l <= r) {
seg.set_max(l, r, -h[id]);
}
} else if (e[0] == 3) {
seg.set(id, -INF);
} else if (e[0] == 4) {
int l = queries[id][0];
int r = queries[id][1];
ans[id] = max(ans[id], seg.qmax(1, l, r));
}
}
}
};
solve();
reverse(a.begin(), a.end());
reverse(b.begin(), b.end());
reverse(h.begin(), h.end());
for (int i = 0; i < q; i++) {
queries[i][0] = n - 1 - queries[i][0];
queries[i][1] = n - 1 - queries[i][1];
swap(queries[i][0], queries[i][1]);
}
solve();
for (int i = 0; i < q; i++)
cout << ans[i] << '\n';
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
2 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
36 ms |
364 KB |
Output is correct |
21 |
Correct |
37 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
2 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
36 ms |
364 KB |
Output is correct |
21 |
Correct |
37 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
164 ms |
4112 KB |
Output is correct |
26 |
Correct |
20 ms |
1132 KB |
Output is correct |
27 |
Correct |
241 ms |
5896 KB |
Output is correct |
28 |
Correct |
288 ms |
6144 KB |
Output is correct |
29 |
Correct |
161 ms |
4364 KB |
Output is correct |
30 |
Correct |
155 ms |
5200 KB |
Output is correct |
31 |
Correct |
215 ms |
5268 KB |
Output is correct |
32 |
Correct |
238 ms |
6068 KB |
Output is correct |
33 |
Correct |
238 ms |
5532 KB |
Output is correct |
34 |
Correct |
114 ms |
3692 KB |
Output is correct |
35 |
Correct |
245 ms |
5780 KB |
Output is correct |
36 |
Correct |
255 ms |
6056 KB |
Output is correct |
37 |
Correct |
137 ms |
3820 KB |
Output is correct |
38 |
Correct |
247 ms |
5484 KB |
Output is correct |
39 |
Correct |
34 ms |
1388 KB |
Output is correct |
40 |
Correct |
246 ms |
5424 KB |
Output is correct |
41 |
Correct |
174 ms |
4564 KB |
Output is correct |
42 |
Correct |
246 ms |
5356 KB |
Output is correct |
43 |
Correct |
78 ms |
2400 KB |
Output is correct |
44 |
Correct |
241 ms |
5356 KB |
Output is correct |
45 |
Correct |
43 ms |
1516 KB |
Output is correct |
46 |
Correct |
247 ms |
5356 KB |
Output is correct |
47 |
Correct |
62 ms |
2028 KB |
Output is correct |
48 |
Correct |
247 ms |
5356 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
614 ms |
19308 KB |
Output is correct |
2 |
Correct |
667 ms |
20720 KB |
Output is correct |
3 |
Correct |
433 ms |
16492 KB |
Output is correct |
4 |
Correct |
662 ms |
20688 KB |
Output is correct |
5 |
Correct |
273 ms |
10092 KB |
Output is correct |
6 |
Correct |
702 ms |
20664 KB |
Output is correct |
7 |
Correct |
556 ms |
18912 KB |
Output is correct |
8 |
Correct |
634 ms |
20628 KB |
Output is correct |
9 |
Correct |
67 ms |
3332 KB |
Output is correct |
10 |
Correct |
694 ms |
20688 KB |
Output is correct |
11 |
Correct |
364 ms |
12272 KB |
Output is correct |
12 |
Correct |
682 ms |
20716 KB |
Output is correct |
13 |
Correct |
552 ms |
22160 KB |
Output is correct |
14 |
Correct |
529 ms |
22388 KB |
Output is correct |
15 |
Correct |
499 ms |
22228 KB |
Output is correct |
16 |
Correct |
504 ms |
22204 KB |
Output is correct |
17 |
Correct |
596 ms |
22124 KB |
Output is correct |
18 |
Correct |
533 ms |
22096 KB |
Output is correct |
19 |
Correct |
536 ms |
22296 KB |
Output is correct |
20 |
Correct |
525 ms |
22124 KB |
Output is correct |
21 |
Correct |
533 ms |
22128 KB |
Output is correct |
22 |
Correct |
536 ms |
22184 KB |
Output is correct |
23 |
Correct |
527 ms |
22292 KB |
Output is correct |
24 |
Correct |
486 ms |
22492 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
1 ms |
364 KB |
Output is correct |
14 |
Correct |
1 ms |
364 KB |
Output is correct |
15 |
Correct |
1 ms |
364 KB |
Output is correct |
16 |
Correct |
2 ms |
364 KB |
Output is correct |
17 |
Correct |
1 ms |
364 KB |
Output is correct |
18 |
Correct |
1 ms |
364 KB |
Output is correct |
19 |
Correct |
1 ms |
364 KB |
Output is correct |
20 |
Correct |
36 ms |
364 KB |
Output is correct |
21 |
Correct |
37 ms |
364 KB |
Output is correct |
22 |
Correct |
1 ms |
364 KB |
Output is correct |
23 |
Correct |
1 ms |
364 KB |
Output is correct |
24 |
Correct |
1 ms |
364 KB |
Output is correct |
25 |
Correct |
164 ms |
4112 KB |
Output is correct |
26 |
Correct |
20 ms |
1132 KB |
Output is correct |
27 |
Correct |
241 ms |
5896 KB |
Output is correct |
28 |
Correct |
288 ms |
6144 KB |
Output is correct |
29 |
Correct |
161 ms |
4364 KB |
Output is correct |
30 |
Correct |
155 ms |
5200 KB |
Output is correct |
31 |
Correct |
215 ms |
5268 KB |
Output is correct |
32 |
Correct |
238 ms |
6068 KB |
Output is correct |
33 |
Correct |
238 ms |
5532 KB |
Output is correct |
34 |
Correct |
114 ms |
3692 KB |
Output is correct |
35 |
Correct |
245 ms |
5780 KB |
Output is correct |
36 |
Correct |
255 ms |
6056 KB |
Output is correct |
37 |
Correct |
137 ms |
3820 KB |
Output is correct |
38 |
Correct |
247 ms |
5484 KB |
Output is correct |
39 |
Correct |
34 ms |
1388 KB |
Output is correct |
40 |
Correct |
246 ms |
5424 KB |
Output is correct |
41 |
Correct |
174 ms |
4564 KB |
Output is correct |
42 |
Correct |
246 ms |
5356 KB |
Output is correct |
43 |
Correct |
78 ms |
2400 KB |
Output is correct |
44 |
Correct |
241 ms |
5356 KB |
Output is correct |
45 |
Correct |
43 ms |
1516 KB |
Output is correct |
46 |
Correct |
247 ms |
5356 KB |
Output is correct |
47 |
Correct |
62 ms |
2028 KB |
Output is correct |
48 |
Correct |
247 ms |
5356 KB |
Output is correct |
49 |
Correct |
614 ms |
19308 KB |
Output is correct |
50 |
Correct |
667 ms |
20720 KB |
Output is correct |
51 |
Correct |
433 ms |
16492 KB |
Output is correct |
52 |
Correct |
662 ms |
20688 KB |
Output is correct |
53 |
Correct |
273 ms |
10092 KB |
Output is correct |
54 |
Correct |
702 ms |
20664 KB |
Output is correct |
55 |
Correct |
556 ms |
18912 KB |
Output is correct |
56 |
Correct |
634 ms |
20628 KB |
Output is correct |
57 |
Correct |
67 ms |
3332 KB |
Output is correct |
58 |
Correct |
694 ms |
20688 KB |
Output is correct |
59 |
Correct |
364 ms |
12272 KB |
Output is correct |
60 |
Correct |
682 ms |
20716 KB |
Output is correct |
61 |
Correct |
552 ms |
22160 KB |
Output is correct |
62 |
Correct |
529 ms |
22388 KB |
Output is correct |
63 |
Correct |
499 ms |
22228 KB |
Output is correct |
64 |
Correct |
504 ms |
22204 KB |
Output is correct |
65 |
Correct |
596 ms |
22124 KB |
Output is correct |
66 |
Correct |
533 ms |
22096 KB |
Output is correct |
67 |
Correct |
536 ms |
22296 KB |
Output is correct |
68 |
Correct |
525 ms |
22124 KB |
Output is correct |
69 |
Correct |
533 ms |
22128 KB |
Output is correct |
70 |
Correct |
536 ms |
22184 KB |
Output is correct |
71 |
Correct |
527 ms |
22292 KB |
Output is correct |
72 |
Correct |
486 ms |
22492 KB |
Output is correct |
73 |
Correct |
990 ms |
24940 KB |
Output is correct |
74 |
Correct |
704 ms |
21452 KB |
Output is correct |
75 |
Correct |
953 ms |
24328 KB |
Output is correct |
76 |
Correct |
1237 ms |
27924 KB |
Output is correct |
77 |
Correct |
602 ms |
15400 KB |
Output is correct |
78 |
Correct |
1081 ms |
25724 KB |
Output is correct |
79 |
Correct |
1128 ms |
26112 KB |
Output is correct |
80 |
Correct |
1267 ms |
28180 KB |
Output is correct |
81 |
Correct |
419 ms |
10240 KB |
Output is correct |
82 |
Correct |
966 ms |
24468 KB |
Output is correct |
83 |
Correct |
872 ms |
19580 KB |
Output is correct |
84 |
Correct |
1247 ms |
28032 KB |
Output is correct |
85 |
Correct |
930 ms |
25348 KB |
Output is correct |
86 |
Correct |
1161 ms |
27772 KB |
Output is correct |
87 |
Correct |
591 ms |
22556 KB |
Output is correct |
88 |
Correct |
1117 ms |
27268 KB |
Output is correct |
89 |
Correct |
1026 ms |
26080 KB |
Output is correct |
90 |
Correct |
1155 ms |
27340 KB |
Output is correct |
91 |
Correct |
736 ms |
23564 KB |
Output is correct |
92 |
Correct |
1158 ms |
27452 KB |
Output is correct |
93 |
Correct |
634 ms |
22880 KB |
Output is correct |
94 |
Correct |
1139 ms |
27600 KB |
Output is correct |
95 |
Correct |
685 ms |
23168 KB |
Output is correct |
96 |
Correct |
1105 ms |
27444 KB |
Output is correct |