#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
#define eb emplace_back
#define mp make_pair
using ii = pair<int, int>;
int N;
bool is_init;
vector<int> H, cl, cr;
vector<vector<int> > anc;
vector<ii> segs;
void init(int N, vector<int> H) {
::N = N;
::H = H;
cl = vector<int>(N, -1);
cr = vector<int>(N, N);
anc = vector<vector<int> >(20, vector<int>(N, -1));
}
struct node {
node *left, *right;
int S, E;
ii val;
node(int _s, int _e) : S(_s), E(_e), val(-1, -1) {
if (S == E) {
return;
}
int M = (S + E) / 2;
left = new node(S, M);
right = new node(M + 1, E);
}
void upd(int p, ii v) {
val = max(val, v);
if (S == E) {
return;
}
int M = (S + E) / 2;
if (p <= M) {
left->upd(p, v);
} else {
right->upd(p, v);
}
}
ii qry(int r) {
if (r < S) {
return mp(-1, -1);
}
if (E <= r) {
return val;
}
return max(left->qry(r), right->qry(r));
}
} *root;
int max_towers(int L, int R, int D) {
if (!is_init) {
vector<ii> vec;
for (int i = 0; i < N; i++) {
{
int lo = 0, hi = (int)vec.size() - 1;
while (lo <= hi) {
int mid = (lo + hi) / 2;
if (vec[mid].first <= H[i] - D) {
cl[i] = vec[mid].second;
lo = mid + 1;
} else {
hi = mid - 1;
}
}
}
while (!vec.empty() && vec.back().first >= H[i]) {
vec.pop_back();
}
vec.eb(H[i], i);
}
vec.clear();
for (int i = N - 1; i >= 0; i--) {
{
int lo = 0, hi = (int)vec.size() - 1;
while (lo <= hi) {
int mid = (lo + hi) / 2;
if (vec[mid].first <= H[i] - D) {
cr[i] = vec[mid].second;
lo = mid + 1;
} else {
hi = mid - 1;
}
}
}
while (!vec.empty() && vec.back().first >= H[i]) {
vec.pop_back();
}
vec.eb(H[i], i);
}
for (int i = 0; i < N; i++) {
if (cl[i] != -1 && cr[i] != N) {
segs.eb(cr[i], cl[i]);
}
}
sort(segs.begin(), segs.end());
root = new node(0, N - 1);
for (int i = 0; i < (int)segs.size(); i++) {
int to = root->qry(segs[i].second).second;
anc[0][i] = to;
for (int k = 1; k < 20; k++) {
if (anc[k - 1][i] == -1) {
break;
}
anc[k][i] = anc[k - 1][anc[k - 1][i]];
}
root->upd(segs[i].first, mp(segs[i].second, i));
}
is_init = 1;
}
int st = root->qry(R).second;
if (st == -1 || segs[st].second < L) {
return 1;
}
int ans = 2;
for (int k = 19; k >= 0; k--) {
if (anc[k][st] != -1 && segs[anc[k][st]].second >= L) {
st = anc[k][st];
ans += (1 << k);
}
}
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
217 ms |
12404 KB |
31st lines differ - on the 1st token, expected: '1', found: '2' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
592 KB |
Output is correct |
3 |
Correct |
1 ms |
592 KB |
Output is correct |
4 |
Correct |
1 ms |
592 KB |
Output is correct |
5 |
Correct |
1 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
592 KB |
Output is correct |
8 |
Correct |
1 ms |
592 KB |
Output is correct |
9 |
Correct |
1 ms |
592 KB |
Output is correct |
10 |
Correct |
1 ms |
592 KB |
Output is correct |
11 |
Correct |
1 ms |
592 KB |
Output is correct |
12 |
Correct |
0 ms |
208 KB |
Output is correct |
13 |
Correct |
1 ms |
592 KB |
Output is correct |
14 |
Correct |
1 ms |
592 KB |
Output is correct |
15 |
Correct |
1 ms |
592 KB |
Output is correct |
16 |
Correct |
1 ms |
592 KB |
Output is correct |
17 |
Correct |
2 ms |
592 KB |
Output is correct |
18 |
Correct |
1 ms |
592 KB |
Output is correct |
19 |
Correct |
1 ms |
592 KB |
Output is correct |
20 |
Correct |
1 ms |
592 KB |
Output is correct |
21 |
Correct |
1 ms |
592 KB |
Output is correct |
22 |
Correct |
1 ms |
592 KB |
Output is correct |
23 |
Correct |
1 ms |
592 KB |
Output is correct |
24 |
Correct |
1 ms |
592 KB |
Output is correct |
25 |
Correct |
0 ms |
464 KB |
Output is correct |
26 |
Correct |
1 ms |
592 KB |
Output is correct |
27 |
Correct |
1 ms |
592 KB |
Output is correct |
28 |
Correct |
1 ms |
592 KB |
Output is correct |
29 |
Correct |
1 ms |
592 KB |
Output is correct |
30 |
Correct |
1 ms |
592 KB |
Output is correct |
31 |
Correct |
1 ms |
592 KB |
Output is correct |
32 |
Correct |
1 ms |
640 KB |
Output is correct |
33 |
Correct |
1 ms |
592 KB |
Output is correct |
34 |
Correct |
1 ms |
592 KB |
Output is correct |
35 |
Correct |
1 ms |
592 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
592 KB |
Output is correct |
3 |
Correct |
1 ms |
592 KB |
Output is correct |
4 |
Correct |
1 ms |
592 KB |
Output is correct |
5 |
Correct |
1 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
592 KB |
Output is correct |
8 |
Correct |
1 ms |
592 KB |
Output is correct |
9 |
Correct |
1 ms |
592 KB |
Output is correct |
10 |
Correct |
1 ms |
592 KB |
Output is correct |
11 |
Correct |
1 ms |
592 KB |
Output is correct |
12 |
Correct |
0 ms |
208 KB |
Output is correct |
13 |
Correct |
1 ms |
592 KB |
Output is correct |
14 |
Correct |
1 ms |
592 KB |
Output is correct |
15 |
Correct |
1 ms |
592 KB |
Output is correct |
16 |
Correct |
1 ms |
592 KB |
Output is correct |
17 |
Correct |
2 ms |
592 KB |
Output is correct |
18 |
Correct |
1 ms |
592 KB |
Output is correct |
19 |
Correct |
1 ms |
592 KB |
Output is correct |
20 |
Correct |
1 ms |
592 KB |
Output is correct |
21 |
Correct |
1 ms |
592 KB |
Output is correct |
22 |
Correct |
1 ms |
592 KB |
Output is correct |
23 |
Correct |
1 ms |
592 KB |
Output is correct |
24 |
Correct |
1 ms |
592 KB |
Output is correct |
25 |
Correct |
0 ms |
464 KB |
Output is correct |
26 |
Correct |
1 ms |
592 KB |
Output is correct |
27 |
Correct |
1 ms |
592 KB |
Output is correct |
28 |
Correct |
1 ms |
592 KB |
Output is correct |
29 |
Correct |
1 ms |
592 KB |
Output is correct |
30 |
Correct |
1 ms |
592 KB |
Output is correct |
31 |
Correct |
1 ms |
592 KB |
Output is correct |
32 |
Correct |
1 ms |
640 KB |
Output is correct |
33 |
Correct |
1 ms |
592 KB |
Output is correct |
34 |
Correct |
1 ms |
592 KB |
Output is correct |
35 |
Correct |
1 ms |
592 KB |
Output is correct |
36 |
Correct |
27 ms |
12992 KB |
Output is correct |
37 |
Correct |
33 ms |
19188 KB |
Output is correct |
38 |
Correct |
38 ms |
19636 KB |
Output is correct |
39 |
Correct |
24 ms |
19148 KB |
Output is correct |
40 |
Correct |
40 ms |
19676 KB |
Output is correct |
41 |
Correct |
32 ms |
19392 KB |
Output is correct |
42 |
Correct |
44 ms |
19892 KB |
Output is correct |
43 |
Correct |
24 ms |
19872 KB |
Output is correct |
44 |
Correct |
24 ms |
19900 KB |
Output is correct |
45 |
Correct |
22 ms |
19520 KB |
Output is correct |
46 |
Correct |
26 ms |
19648 KB |
Output is correct |
47 |
Correct |
44 ms |
19900 KB |
Output is correct |
48 |
Correct |
44 ms |
19900 KB |
Output is correct |
49 |
Correct |
43 ms |
19896 KB |
Output is correct |
50 |
Correct |
22 ms |
19860 KB |
Output is correct |
51 |
Correct |
22 ms |
19848 KB |
Output is correct |
52 |
Correct |
46 ms |
19868 KB |
Output is correct |
53 |
Correct |
51 ms |
19892 KB |
Output is correct |
54 |
Correct |
44 ms |
19900 KB |
Output is correct |
55 |
Correct |
21 ms |
19900 KB |
Output is correct |
56 |
Correct |
37 ms |
19904 KB |
Output is correct |
57 |
Correct |
36 ms |
18768 KB |
Output is correct |
58 |
Correct |
41 ms |
19552 KB |
Output is correct |
59 |
Correct |
41 ms |
19704 KB |
Output is correct |
60 |
Correct |
49 ms |
19872 KB |
Output is correct |
61 |
Correct |
39 ms |
19608 KB |
Output is correct |
62 |
Correct |
45 ms |
19520 KB |
Output is correct |
63 |
Correct |
39 ms |
19616 KB |
Output is correct |
64 |
Correct |
22 ms |
19900 KB |
Output is correct |
65 |
Correct |
22 ms |
19892 KB |
Output is correct |
66 |
Correct |
27 ms |
19776 KB |
Output is correct |
67 |
Correct |
22 ms |
19832 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
556 ms |
19652 KB |
Output is correct |
2 |
Correct |
723 ms |
19900 KB |
Output is correct |
3 |
Correct |
709 ms |
19988 KB |
Output is correct |
4 |
Correct |
777 ms |
20024 KB |
Output is correct |
5 |
Correct |
762 ms |
19900 KB |
Output is correct |
6 |
Correct |
779 ms |
19876 KB |
Output is correct |
7 |
Correct |
789 ms |
19900 KB |
Output is correct |
8 |
Correct |
713 ms |
19900 KB |
Output is correct |
9 |
Correct |
733 ms |
19900 KB |
Output is correct |
10 |
Correct |
740 ms |
19900 KB |
Output is correct |
11 |
Correct |
822 ms |
20028 KB |
Output is correct |
12 |
Correct |
705 ms |
20624 KB |
Output is correct |
13 |
Correct |
823 ms |
19768 KB |
Output is correct |
14 |
Correct |
0 ms |
208 KB |
Output is correct |
15 |
Correct |
1 ms |
592 KB |
Output is correct |
16 |
Correct |
1 ms |
592 KB |
Output is correct |
17 |
Correct |
50 ms |
19840 KB |
Output is correct |
18 |
Correct |
49 ms |
19812 KB |
Output is correct |
19 |
Correct |
43 ms |
19892 KB |
Output is correct |
20 |
Correct |
23 ms |
19900 KB |
Output is correct |
21 |
Correct |
22 ms |
19868 KB |
Output is correct |
22 |
Correct |
45 ms |
19896 KB |
Output is correct |
23 |
Correct |
49 ms |
19900 KB |
Output is correct |
24 |
Correct |
43 ms |
19920 KB |
Output is correct |
25 |
Correct |
22 ms |
19904 KB |
Output is correct |
26 |
Correct |
30 ms |
19904 KB |
Output is correct |
27 |
Correct |
1 ms |
592 KB |
Output is correct |
28 |
Correct |
1 ms |
592 KB |
Output is correct |
29 |
Correct |
1 ms |
592 KB |
Output is correct |
30 |
Correct |
1 ms |
592 KB |
Output is correct |
31 |
Correct |
1 ms |
592 KB |
Output is correct |
32 |
Correct |
1 ms |
592 KB |
Output is correct |
33 |
Correct |
1 ms |
592 KB |
Output is correct |
34 |
Correct |
1 ms |
592 KB |
Output is correct |
35 |
Correct |
1 ms |
592 KB |
Output is correct |
36 |
Correct |
1 ms |
592 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
221 ms |
4940 KB |
2nd lines differ - on the 1st token, expected: '7063', found: '7197' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
592 KB |
Output is correct |
3 |
Correct |
1 ms |
592 KB |
Output is correct |
4 |
Correct |
1 ms |
592 KB |
Output is correct |
5 |
Correct |
1 ms |
592 KB |
Output is correct |
6 |
Correct |
2 ms |
592 KB |
Output is correct |
7 |
Correct |
1 ms |
592 KB |
Output is correct |
8 |
Correct |
1 ms |
592 KB |
Output is correct |
9 |
Correct |
1 ms |
592 KB |
Output is correct |
10 |
Correct |
1 ms |
592 KB |
Output is correct |
11 |
Correct |
1 ms |
592 KB |
Output is correct |
12 |
Correct |
0 ms |
208 KB |
Output is correct |
13 |
Correct |
1 ms |
592 KB |
Output is correct |
14 |
Correct |
1 ms |
592 KB |
Output is correct |
15 |
Correct |
1 ms |
592 KB |
Output is correct |
16 |
Correct |
1 ms |
592 KB |
Output is correct |
17 |
Correct |
2 ms |
592 KB |
Output is correct |
18 |
Correct |
1 ms |
592 KB |
Output is correct |
19 |
Correct |
1 ms |
592 KB |
Output is correct |
20 |
Correct |
1 ms |
592 KB |
Output is correct |
21 |
Correct |
1 ms |
592 KB |
Output is correct |
22 |
Correct |
1 ms |
592 KB |
Output is correct |
23 |
Correct |
1 ms |
592 KB |
Output is correct |
24 |
Correct |
1 ms |
592 KB |
Output is correct |
25 |
Correct |
0 ms |
464 KB |
Output is correct |
26 |
Correct |
1 ms |
592 KB |
Output is correct |
27 |
Correct |
1 ms |
592 KB |
Output is correct |
28 |
Correct |
1 ms |
592 KB |
Output is correct |
29 |
Correct |
1 ms |
592 KB |
Output is correct |
30 |
Correct |
1 ms |
592 KB |
Output is correct |
31 |
Correct |
1 ms |
592 KB |
Output is correct |
32 |
Correct |
1 ms |
640 KB |
Output is correct |
33 |
Correct |
1 ms |
592 KB |
Output is correct |
34 |
Correct |
1 ms |
592 KB |
Output is correct |
35 |
Correct |
1 ms |
592 KB |
Output is correct |
36 |
Correct |
27 ms |
12992 KB |
Output is correct |
37 |
Correct |
33 ms |
19188 KB |
Output is correct |
38 |
Correct |
38 ms |
19636 KB |
Output is correct |
39 |
Correct |
24 ms |
19148 KB |
Output is correct |
40 |
Correct |
40 ms |
19676 KB |
Output is correct |
41 |
Correct |
32 ms |
19392 KB |
Output is correct |
42 |
Correct |
44 ms |
19892 KB |
Output is correct |
43 |
Correct |
24 ms |
19872 KB |
Output is correct |
44 |
Correct |
24 ms |
19900 KB |
Output is correct |
45 |
Correct |
22 ms |
19520 KB |
Output is correct |
46 |
Correct |
26 ms |
19648 KB |
Output is correct |
47 |
Correct |
44 ms |
19900 KB |
Output is correct |
48 |
Correct |
44 ms |
19900 KB |
Output is correct |
49 |
Correct |
43 ms |
19896 KB |
Output is correct |
50 |
Correct |
22 ms |
19860 KB |
Output is correct |
51 |
Correct |
22 ms |
19848 KB |
Output is correct |
52 |
Correct |
46 ms |
19868 KB |
Output is correct |
53 |
Correct |
51 ms |
19892 KB |
Output is correct |
54 |
Correct |
44 ms |
19900 KB |
Output is correct |
55 |
Correct |
21 ms |
19900 KB |
Output is correct |
56 |
Correct |
37 ms |
19904 KB |
Output is correct |
57 |
Correct |
36 ms |
18768 KB |
Output is correct |
58 |
Correct |
41 ms |
19552 KB |
Output is correct |
59 |
Correct |
41 ms |
19704 KB |
Output is correct |
60 |
Correct |
49 ms |
19872 KB |
Output is correct |
61 |
Correct |
39 ms |
19608 KB |
Output is correct |
62 |
Correct |
45 ms |
19520 KB |
Output is correct |
63 |
Correct |
39 ms |
19616 KB |
Output is correct |
64 |
Correct |
22 ms |
19900 KB |
Output is correct |
65 |
Correct |
22 ms |
19892 KB |
Output is correct |
66 |
Correct |
27 ms |
19776 KB |
Output is correct |
67 |
Correct |
22 ms |
19832 KB |
Output is correct |
68 |
Correct |
556 ms |
19652 KB |
Output is correct |
69 |
Correct |
723 ms |
19900 KB |
Output is correct |
70 |
Correct |
709 ms |
19988 KB |
Output is correct |
71 |
Correct |
777 ms |
20024 KB |
Output is correct |
72 |
Correct |
762 ms |
19900 KB |
Output is correct |
73 |
Correct |
779 ms |
19876 KB |
Output is correct |
74 |
Correct |
789 ms |
19900 KB |
Output is correct |
75 |
Correct |
713 ms |
19900 KB |
Output is correct |
76 |
Correct |
733 ms |
19900 KB |
Output is correct |
77 |
Correct |
740 ms |
19900 KB |
Output is correct |
78 |
Correct |
822 ms |
20028 KB |
Output is correct |
79 |
Correct |
705 ms |
20624 KB |
Output is correct |
80 |
Correct |
823 ms |
19768 KB |
Output is correct |
81 |
Correct |
0 ms |
208 KB |
Output is correct |
82 |
Correct |
1 ms |
592 KB |
Output is correct |
83 |
Correct |
1 ms |
592 KB |
Output is correct |
84 |
Correct |
50 ms |
19840 KB |
Output is correct |
85 |
Correct |
49 ms |
19812 KB |
Output is correct |
86 |
Correct |
43 ms |
19892 KB |
Output is correct |
87 |
Correct |
23 ms |
19900 KB |
Output is correct |
88 |
Correct |
22 ms |
19868 KB |
Output is correct |
89 |
Correct |
45 ms |
19896 KB |
Output is correct |
90 |
Correct |
49 ms |
19900 KB |
Output is correct |
91 |
Correct |
43 ms |
19920 KB |
Output is correct |
92 |
Correct |
22 ms |
19904 KB |
Output is correct |
93 |
Correct |
30 ms |
19904 KB |
Output is correct |
94 |
Correct |
1 ms |
592 KB |
Output is correct |
95 |
Correct |
1 ms |
592 KB |
Output is correct |
96 |
Correct |
1 ms |
592 KB |
Output is correct |
97 |
Correct |
1 ms |
592 KB |
Output is correct |
98 |
Correct |
1 ms |
592 KB |
Output is correct |
99 |
Correct |
1 ms |
592 KB |
Output is correct |
100 |
Correct |
1 ms |
592 KB |
Output is correct |
101 |
Correct |
1 ms |
592 KB |
Output is correct |
102 |
Correct |
1 ms |
592 KB |
Output is correct |
103 |
Correct |
1 ms |
592 KB |
Output is correct |
104 |
Correct |
783 ms |
17616 KB |
Output is correct |
105 |
Correct |
967 ms |
19684 KB |
Output is correct |
106 |
Correct |
814 ms |
19384 KB |
Output is correct |
107 |
Correct |
797 ms |
19520 KB |
Output is correct |
108 |
Correct |
682 ms |
19136 KB |
Output is correct |
109 |
Correct |
941 ms |
19568 KB |
Output is correct |
110 |
Correct |
711 ms |
19836 KB |
Output is correct |
111 |
Correct |
658 ms |
19900 KB |
Output is correct |
112 |
Correct |
666 ms |
19892 KB |
Output is correct |
113 |
Correct |
771 ms |
19776 KB |
Output is correct |
114 |
Correct |
738 ms |
20028 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
217 ms |
12404 KB |
31st lines differ - on the 1st token, expected: '1', found: '2' |
2 |
Halted |
0 ms |
0 KB |
- |