import java.util.*;
import java.io.*;
public class triusis {
public static void main(String[] args) throws IOException {
Reader in = new Reader();
PrintWriter out = new PrintWriter(System.out);
int N = in.nextInt() + 1, K = in.nextInt();
long[] arr = new long[N];
for (int i = 1; i < N; i++) {
int h = in.nextInt();
arr[i] = h - i * K;
}
TreeSet<Long> set = new TreeSet<>();
for (long i : arr) {
set.add(i);
}
HashMap<Long, Integer> map = new HashMap<>();
int index = 0;
for (long i : set) {
map.put(i, index++);
}
int[] arr2 = new int[N];
for (int i = 0; i < N; i++) {
arr2[i] = map.get(arr[i]);
}
int M = 1;
while (M < 200001) {
M <<= 1;
}
int[] tree = new int[M * 2];
for (int i = 0; i < N; i++) {
int l = arr2[i] + M, r = M * 2 - 1;
int max = 0;
while (l <= r) {
if (l % 2 == 1) {
max = Math.max(max, tree[l]);
l >>= 1;
l++;
} else {
l >>= 1;
}
if (r % 2 == 0) {
max = Math.max(max, tree[r]);
r >>= 1;
r--;
} else {
r >>= 1;
}
}
if (i > 0 && max == 0) {
continue;
}
max++;
int current = arr2[i] + M;
while (current > 0) {
tree[current] = Math.max(tree[current], max);
current >>= 1;
}
}
out.println(N - tree[1]);
out.close();
}
static class Reader {
BufferedInputStream in;
public Reader() {
in = new BufferedInputStream(System.in);
}
public String nextLine() throws IOException {
int c;
StringBuilder sb = new StringBuilder("");
while ((c = in.read()) != '\n')
sb.append((char)(c));
return sb.toString();
}
public String next() throws IOException {
int c;
StringBuilder sb = new StringBuilder("");
while ((c = in.read()) != ' ' && c != '\n')
sb.append((char)(c));
return sb.toString();
}
public int nextInt() throws IOException {
return (int)nextLong();
}
public long nextLong() throws IOException {
int c;
long res = 0;
boolean start = false, negative = false;
while ((c = in.read()) != ' ' && c != '\n' || !start)
if (c >= '0' && c <= '9' || c == '-') {
start = true;
if (c == '-')
negative = true;
else
res = res * 10 + c - '0';
}
return res * (negative ? -1 : 1);
}
}
public static void sort(int[] arr) {
List<Integer> list = new ArrayList<>();
for (int i : arr) {
list.add(i);
}
Collections.sort(list);
for (int i = 0; i < arr.length; i++) {
arr[i] = list.get(i);
}
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
64 ms |
10124 KB |
Output is correct |
2 |
Correct |
60 ms |
10436 KB |
Output is correct |
3 |
Correct |
65 ms |
10256 KB |
Output is correct |
4 |
Correct |
74 ms |
10188 KB |
Output is correct |
5 |
Correct |
61 ms |
10300 KB |
Output is correct |
6 |
Correct |
67 ms |
10476 KB |
Output is correct |
7 |
Correct |
58 ms |
10028 KB |
Output is correct |
8 |
Correct |
60 ms |
10340 KB |
Output is correct |
9 |
Correct |
67 ms |
10248 KB |
Output is correct |
10 |
Correct |
61 ms |
10184 KB |
Output is correct |
11 |
Correct |
69 ms |
10212 KB |
Output is correct |
12 |
Correct |
59 ms |
10456 KB |
Output is correct |
13 |
Correct |
58 ms |
10288 KB |
Output is correct |
14 |
Correct |
63 ms |
10444 KB |
Output is correct |
15 |
Correct |
60 ms |
10356 KB |
Output is correct |
16 |
Correct |
73 ms |
10200 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
64 ms |
10124 KB |
Output is correct |
2 |
Correct |
60 ms |
10436 KB |
Output is correct |
3 |
Correct |
65 ms |
10256 KB |
Output is correct |
4 |
Correct |
74 ms |
10188 KB |
Output is correct |
5 |
Correct |
61 ms |
10300 KB |
Output is correct |
6 |
Correct |
67 ms |
10476 KB |
Output is correct |
7 |
Correct |
58 ms |
10028 KB |
Output is correct |
8 |
Correct |
60 ms |
10340 KB |
Output is correct |
9 |
Correct |
67 ms |
10248 KB |
Output is correct |
10 |
Correct |
61 ms |
10184 KB |
Output is correct |
11 |
Correct |
69 ms |
10212 KB |
Output is correct |
12 |
Correct |
59 ms |
10456 KB |
Output is correct |
13 |
Correct |
58 ms |
10288 KB |
Output is correct |
14 |
Correct |
63 ms |
10444 KB |
Output is correct |
15 |
Correct |
60 ms |
10356 KB |
Output is correct |
16 |
Correct |
73 ms |
10200 KB |
Output is correct |
17 |
Correct |
67 ms |
10248 KB |
Output is correct |
18 |
Correct |
62 ms |
10204 KB |
Output is correct |
19 |
Correct |
66 ms |
10312 KB |
Output is correct |
20 |
Correct |
153 ms |
12736 KB |
Output is correct |
21 |
Correct |
124 ms |
12444 KB |
Output is correct |
22 |
Correct |
125 ms |
12432 KB |
Output is correct |
23 |
Correct |
141 ms |
12828 KB |
Output is correct |
24 |
Correct |
130 ms |
12688 KB |
Output is correct |
25 |
Correct |
123 ms |
12436 KB |
Output is correct |
26 |
Correct |
126 ms |
12616 KB |
Output is correct |
27 |
Correct |
95 ms |
10900 KB |
Output is correct |
28 |
Correct |
102 ms |
10748 KB |
Output is correct |
29 |
Correct |
125 ms |
12620 KB |
Output is correct |
30 |
Correct |
127 ms |
12508 KB |
Output is correct |
31 |
Correct |
141 ms |
12484 KB |
Output is correct |
32 |
Correct |
146 ms |
12856 KB |
Output is correct |
33 |
Correct |
161 ms |
12764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
10248 KB |
Output is correct |
2 |
Correct |
62 ms |
10204 KB |
Output is correct |
3 |
Correct |
66 ms |
10312 KB |
Output is correct |
4 |
Correct |
153 ms |
12736 KB |
Output is correct |
5 |
Correct |
124 ms |
12444 KB |
Output is correct |
6 |
Correct |
125 ms |
12432 KB |
Output is correct |
7 |
Correct |
141 ms |
12828 KB |
Output is correct |
8 |
Correct |
130 ms |
12688 KB |
Output is correct |
9 |
Correct |
123 ms |
12436 KB |
Output is correct |
10 |
Correct |
126 ms |
12616 KB |
Output is correct |
11 |
Correct |
95 ms |
10900 KB |
Output is correct |
12 |
Correct |
102 ms |
10748 KB |
Output is correct |
13 |
Correct |
125 ms |
12620 KB |
Output is correct |
14 |
Correct |
127 ms |
12508 KB |
Output is correct |
15 |
Correct |
141 ms |
12484 KB |
Output is correct |
16 |
Correct |
146 ms |
12856 KB |
Output is correct |
17 |
Correct |
161 ms |
12764 KB |
Output is correct |
18 |
Correct |
64 ms |
10124 KB |
Output is correct |
19 |
Correct |
60 ms |
10436 KB |
Output is correct |
20 |
Correct |
65 ms |
10256 KB |
Output is correct |
21 |
Correct |
74 ms |
10188 KB |
Output is correct |
22 |
Correct |
61 ms |
10300 KB |
Output is correct |
23 |
Correct |
67 ms |
10476 KB |
Output is correct |
24 |
Correct |
58 ms |
10028 KB |
Output is correct |
25 |
Correct |
60 ms |
10340 KB |
Output is correct |
26 |
Correct |
67 ms |
10248 KB |
Output is correct |
27 |
Correct |
61 ms |
10184 KB |
Output is correct |
28 |
Correct |
69 ms |
10212 KB |
Output is correct |
29 |
Correct |
59 ms |
10456 KB |
Output is correct |
30 |
Correct |
58 ms |
10288 KB |
Output is correct |
31 |
Correct |
63 ms |
10444 KB |
Output is correct |
32 |
Correct |
60 ms |
10356 KB |
Output is correct |
33 |
Correct |
73 ms |
10200 KB |
Output is correct |
34 |
Correct |
134 ms |
12820 KB |
Output is correct |
35 |
Correct |
157 ms |
12936 KB |
Output is correct |
36 |
Correct |
129 ms |
12936 KB |
Output is correct |
37 |
Correct |
122 ms |
12820 KB |
Output is correct |
38 |
Correct |
88 ms |
10692 KB |
Output is correct |
39 |
Correct |
97 ms |
10920 KB |
Output is correct |
40 |
Correct |
152 ms |
12528 KB |
Output is correct |
41 |
Correct |
90 ms |
10928 KB |
Output is correct |
42 |
Correct |
145 ms |
12840 KB |
Output is correct |
43 |
Correct |
127 ms |
12708 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
134 ms |
12820 KB |
Output is correct |
2 |
Correct |
157 ms |
12936 KB |
Output is correct |
3 |
Correct |
129 ms |
12936 KB |
Output is correct |
4 |
Correct |
122 ms |
12820 KB |
Output is correct |
5 |
Correct |
88 ms |
10692 KB |
Output is correct |
6 |
Correct |
97 ms |
10920 KB |
Output is correct |
7 |
Correct |
152 ms |
12528 KB |
Output is correct |
8 |
Correct |
90 ms |
10928 KB |
Output is correct |
9 |
Correct |
145 ms |
12840 KB |
Output is correct |
10 |
Correct |
127 ms |
12708 KB |
Output is correct |
11 |
Correct |
67 ms |
10248 KB |
Output is correct |
12 |
Correct |
62 ms |
10204 KB |
Output is correct |
13 |
Correct |
66 ms |
10312 KB |
Output is correct |
14 |
Correct |
153 ms |
12736 KB |
Output is correct |
15 |
Correct |
124 ms |
12444 KB |
Output is correct |
16 |
Correct |
125 ms |
12432 KB |
Output is correct |
17 |
Correct |
141 ms |
12828 KB |
Output is correct |
18 |
Correct |
130 ms |
12688 KB |
Output is correct |
19 |
Correct |
123 ms |
12436 KB |
Output is correct |
20 |
Correct |
126 ms |
12616 KB |
Output is correct |
21 |
Correct |
95 ms |
10900 KB |
Output is correct |
22 |
Correct |
102 ms |
10748 KB |
Output is correct |
23 |
Correct |
125 ms |
12620 KB |
Output is correct |
24 |
Correct |
127 ms |
12508 KB |
Output is correct |
25 |
Correct |
141 ms |
12484 KB |
Output is correct |
26 |
Correct |
146 ms |
12856 KB |
Output is correct |
27 |
Correct |
161 ms |
12764 KB |
Output is correct |
28 |
Correct |
64 ms |
10124 KB |
Output is correct |
29 |
Correct |
60 ms |
10436 KB |
Output is correct |
30 |
Correct |
65 ms |
10256 KB |
Output is correct |
31 |
Correct |
74 ms |
10188 KB |
Output is correct |
32 |
Correct |
61 ms |
10300 KB |
Output is correct |
33 |
Correct |
67 ms |
10476 KB |
Output is correct |
34 |
Correct |
58 ms |
10028 KB |
Output is correct |
35 |
Correct |
60 ms |
10340 KB |
Output is correct |
36 |
Correct |
67 ms |
10248 KB |
Output is correct |
37 |
Correct |
61 ms |
10184 KB |
Output is correct |
38 |
Correct |
69 ms |
10212 KB |
Output is correct |
39 |
Correct |
59 ms |
10456 KB |
Output is correct |
40 |
Correct |
58 ms |
10288 KB |
Output is correct |
41 |
Correct |
63 ms |
10444 KB |
Output is correct |
42 |
Correct |
60 ms |
10356 KB |
Output is correct |
43 |
Correct |
73 ms |
10200 KB |
Output is correct |
44 |
Correct |
478 ms |
53376 KB |
Output is correct |
45 |
Correct |
608 ms |
54912 KB |
Output is correct |
46 |
Correct |
637 ms |
55916 KB |
Output is correct |
47 |
Correct |
646 ms |
54940 KB |
Output is correct |
48 |
Correct |
420 ms |
51852 KB |
Output is correct |
49 |
Correct |
493 ms |
54060 KB |
Output is correct |
50 |
Correct |
172 ms |
17052 KB |
Output is correct |
51 |
Correct |
226 ms |
17428 KB |
Output is correct |
52 |
Correct |
352 ms |
32804 KB |
Output is correct |
53 |
Correct |
156 ms |
15836 KB |
Output is correct |
54 |
Correct |
447 ms |
53912 KB |
Output is correct |
55 |
Correct |
444 ms |
53704 KB |
Output is correct |