import java.io.*;
import java.util.ArrayList;
import java.util.InputMismatchException;
import java.util.function.Predicate;
public class triusis {
public static void main(String[] args) {
FastIO io = new FastIO();
int n = io.nextInt();
int m = io.nextInt();
int[] arr = new int[n + 1];
for (int i = 1; i <= n; i++) arr[i] = -(io.nextInt() - i * m);
ArrayList<Integer> l = new ArrayList<>();
l.add(0);
for (int i = 1; i <= n; i++) {
int val = arr[i];
int upper = firstTrue(0, l.size() - 1, (x) -> l.get(x) > val);
if (upper == 0) continue;
if (upper == l.size()) l.add(val);
l.set(upper, val);
}
io.println(n - l.size() + 1);
io.close();
}
public static int firstTrue(int lo, int hi, Predicate<Integer> test) {
hi++;
while (lo < hi) {
int mid = lo + (hi - lo) / 2;
if (test.test(mid)) {
hi = mid;
} else {
lo = mid + 1;
}
}
return lo;
}
private static class FastIO extends PrintWriter {
private final InputStream stream;
private final byte[] buf = new byte[1 << 16];
private int curChar, numChars;
// standard input
public FastIO() {
this(System.in, System.out);
}
public FastIO(InputStream i, OutputStream o) {
super(o);
stream = i;
}
// file input
public FastIO(String i, String o) throws IOException {
super(new FileWriter(o));
stream = new FileInputStream(i);
}
// throws InputMismatchException() if previously detected end of file
private int nextByte() {
if (numChars == -1) throw new InputMismatchException();
if (curChar >= numChars) {
curChar = 0;
try {
numChars = stream.read(buf);
} catch (IOException e) {
throw new InputMismatchException();
}
if (numChars == -1) return -1; // end of file
}
return buf[curChar++];
}
// to read in entire lines, replace c <= ' '
// with a function that checks whether c is a line break
public String next() {
int c;
do {
c = nextByte();
} while (c <= ' ');
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = nextByte();
} while (c > ' ');
return res.toString();
}
public int nextInt() { // nextLong() would be implemented similarly
int c;
do {
c = nextByte();
} while (c <= ' ');
int sgn = 1;
if (c == '-') {
sgn = -1;
c = nextByte();
}
int res = 0;
do {
if (c < '0' || c > '9') throw new InputMismatchException();
res = 10 * res + c - '0';
c = nextByte();
} while (c > ' ');
return res * sgn;
}
public long nextLong() { // nextLong() would be implemented similarly
int c;
do {
c = nextByte();
} while (c <= ' ');
int sgn = 1;
if (c == '-') {
sgn = -1;
c = nextByte();
}
long res = 0;
do {
if (c < '0' || c > '9') throw new InputMismatchException();
res = 10 * res + c - '0';
c = nextByte();
} while (c > ' ');
return res * sgn;
}
public double nextDouble() {
return Double.parseDouble(next());
}
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
64 ms |
8940 KB |
Output is correct |
2 |
Correct |
63 ms |
8764 KB |
Output is correct |
3 |
Correct |
67 ms |
8908 KB |
Output is correct |
4 |
Correct |
66 ms |
9028 KB |
Output is correct |
5 |
Correct |
69 ms |
8624 KB |
Output is correct |
6 |
Correct |
69 ms |
8960 KB |
Output is correct |
7 |
Correct |
63 ms |
8920 KB |
Output is correct |
8 |
Correct |
73 ms |
8836 KB |
Output is correct |
9 |
Correct |
67 ms |
8848 KB |
Output is correct |
10 |
Correct |
74 ms |
8992 KB |
Output is correct |
11 |
Correct |
65 ms |
8764 KB |
Output is correct |
12 |
Correct |
66 ms |
8864 KB |
Output is correct |
13 |
Correct |
63 ms |
8860 KB |
Output is correct |
14 |
Correct |
67 ms |
8692 KB |
Output is correct |
15 |
Correct |
64 ms |
8948 KB |
Output is correct |
16 |
Correct |
64 ms |
9020 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
64 ms |
8940 KB |
Output is correct |
2 |
Correct |
63 ms |
8764 KB |
Output is correct |
3 |
Correct |
67 ms |
8908 KB |
Output is correct |
4 |
Correct |
66 ms |
9028 KB |
Output is correct |
5 |
Correct |
69 ms |
8624 KB |
Output is correct |
6 |
Correct |
69 ms |
8960 KB |
Output is correct |
7 |
Correct |
63 ms |
8920 KB |
Output is correct |
8 |
Correct |
73 ms |
8836 KB |
Output is correct |
9 |
Correct |
67 ms |
8848 KB |
Output is correct |
10 |
Correct |
74 ms |
8992 KB |
Output is correct |
11 |
Correct |
65 ms |
8764 KB |
Output is correct |
12 |
Correct |
66 ms |
8864 KB |
Output is correct |
13 |
Correct |
63 ms |
8860 KB |
Output is correct |
14 |
Correct |
67 ms |
8692 KB |
Output is correct |
15 |
Correct |
64 ms |
8948 KB |
Output is correct |
16 |
Correct |
64 ms |
9020 KB |
Output is correct |
17 |
Correct |
65 ms |
8572 KB |
Output is correct |
18 |
Correct |
65 ms |
8932 KB |
Output is correct |
19 |
Correct |
64 ms |
8884 KB |
Output is correct |
20 |
Correct |
95 ms |
9808 KB |
Output is correct |
21 |
Correct |
96 ms |
9660 KB |
Output is correct |
22 |
Correct |
82 ms |
9224 KB |
Output is correct |
23 |
Correct |
95 ms |
9764 KB |
Output is correct |
24 |
Correct |
97 ms |
9916 KB |
Output is correct |
25 |
Correct |
94 ms |
9836 KB |
Output is correct |
26 |
Correct |
92 ms |
9804 KB |
Output is correct |
27 |
Correct |
100 ms |
10208 KB |
Output is correct |
28 |
Correct |
96 ms |
10092 KB |
Output is correct |
29 |
Correct |
90 ms |
9924 KB |
Output is correct |
30 |
Correct |
98 ms |
9868 KB |
Output is correct |
31 |
Correct |
110 ms |
10092 KB |
Output is correct |
32 |
Correct |
103 ms |
9740 KB |
Output is correct |
33 |
Correct |
99 ms |
9508 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
65 ms |
8572 KB |
Output is correct |
2 |
Correct |
65 ms |
8932 KB |
Output is correct |
3 |
Correct |
64 ms |
8884 KB |
Output is correct |
4 |
Correct |
95 ms |
9808 KB |
Output is correct |
5 |
Correct |
96 ms |
9660 KB |
Output is correct |
6 |
Correct |
82 ms |
9224 KB |
Output is correct |
7 |
Correct |
95 ms |
9764 KB |
Output is correct |
8 |
Correct |
97 ms |
9916 KB |
Output is correct |
9 |
Correct |
94 ms |
9836 KB |
Output is correct |
10 |
Correct |
92 ms |
9804 KB |
Output is correct |
11 |
Correct |
100 ms |
10208 KB |
Output is correct |
12 |
Correct |
96 ms |
10092 KB |
Output is correct |
13 |
Correct |
90 ms |
9924 KB |
Output is correct |
14 |
Correct |
98 ms |
9868 KB |
Output is correct |
15 |
Correct |
110 ms |
10092 KB |
Output is correct |
16 |
Correct |
103 ms |
9740 KB |
Output is correct |
17 |
Correct |
99 ms |
9508 KB |
Output is correct |
18 |
Correct |
64 ms |
8940 KB |
Output is correct |
19 |
Correct |
63 ms |
8764 KB |
Output is correct |
20 |
Correct |
67 ms |
8908 KB |
Output is correct |
21 |
Correct |
66 ms |
9028 KB |
Output is correct |
22 |
Correct |
69 ms |
8624 KB |
Output is correct |
23 |
Correct |
69 ms |
8960 KB |
Output is correct |
24 |
Correct |
63 ms |
8920 KB |
Output is correct |
25 |
Correct |
73 ms |
8836 KB |
Output is correct |
26 |
Correct |
67 ms |
8848 KB |
Output is correct |
27 |
Correct |
74 ms |
8992 KB |
Output is correct |
28 |
Correct |
65 ms |
8764 KB |
Output is correct |
29 |
Correct |
66 ms |
8864 KB |
Output is correct |
30 |
Correct |
63 ms |
8860 KB |
Output is correct |
31 |
Correct |
67 ms |
8692 KB |
Output is correct |
32 |
Correct |
64 ms |
8948 KB |
Output is correct |
33 |
Correct |
64 ms |
9020 KB |
Output is correct |
34 |
Correct |
81 ms |
9200 KB |
Output is correct |
35 |
Correct |
89 ms |
9376 KB |
Output is correct |
36 |
Correct |
89 ms |
9456 KB |
Output is correct |
37 |
Correct |
97 ms |
9908 KB |
Output is correct |
38 |
Correct |
97 ms |
9808 KB |
Output is correct |
39 |
Correct |
98 ms |
10456 KB |
Output is correct |
40 |
Correct |
115 ms |
10356 KB |
Output is correct |
41 |
Correct |
81 ms |
9256 KB |
Output is correct |
42 |
Correct |
101 ms |
9464 KB |
Output is correct |
43 |
Correct |
95 ms |
9696 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
81 ms |
9200 KB |
Output is correct |
2 |
Correct |
89 ms |
9376 KB |
Output is correct |
3 |
Correct |
89 ms |
9456 KB |
Output is correct |
4 |
Correct |
97 ms |
9908 KB |
Output is correct |
5 |
Correct |
97 ms |
9808 KB |
Output is correct |
6 |
Correct |
98 ms |
10456 KB |
Output is correct |
7 |
Correct |
115 ms |
10356 KB |
Output is correct |
8 |
Correct |
81 ms |
9256 KB |
Output is correct |
9 |
Correct |
101 ms |
9464 KB |
Output is correct |
10 |
Correct |
95 ms |
9696 KB |
Output is correct |
11 |
Correct |
65 ms |
8572 KB |
Output is correct |
12 |
Correct |
65 ms |
8932 KB |
Output is correct |
13 |
Correct |
64 ms |
8884 KB |
Output is correct |
14 |
Correct |
95 ms |
9808 KB |
Output is correct |
15 |
Correct |
96 ms |
9660 KB |
Output is correct |
16 |
Correct |
82 ms |
9224 KB |
Output is correct |
17 |
Correct |
95 ms |
9764 KB |
Output is correct |
18 |
Correct |
97 ms |
9916 KB |
Output is correct |
19 |
Correct |
94 ms |
9836 KB |
Output is correct |
20 |
Correct |
92 ms |
9804 KB |
Output is correct |
21 |
Correct |
100 ms |
10208 KB |
Output is correct |
22 |
Correct |
96 ms |
10092 KB |
Output is correct |
23 |
Correct |
90 ms |
9924 KB |
Output is correct |
24 |
Correct |
98 ms |
9868 KB |
Output is correct |
25 |
Correct |
110 ms |
10092 KB |
Output is correct |
26 |
Correct |
103 ms |
9740 KB |
Output is correct |
27 |
Correct |
99 ms |
9508 KB |
Output is correct |
28 |
Correct |
64 ms |
8940 KB |
Output is correct |
29 |
Correct |
63 ms |
8764 KB |
Output is correct |
30 |
Correct |
67 ms |
8908 KB |
Output is correct |
31 |
Correct |
66 ms |
9028 KB |
Output is correct |
32 |
Correct |
69 ms |
8624 KB |
Output is correct |
33 |
Correct |
69 ms |
8960 KB |
Output is correct |
34 |
Correct |
63 ms |
8920 KB |
Output is correct |
35 |
Correct |
73 ms |
8836 KB |
Output is correct |
36 |
Correct |
67 ms |
8848 KB |
Output is correct |
37 |
Correct |
74 ms |
8992 KB |
Output is correct |
38 |
Correct |
65 ms |
8764 KB |
Output is correct |
39 |
Correct |
66 ms |
8864 KB |
Output is correct |
40 |
Correct |
63 ms |
8860 KB |
Output is correct |
41 |
Correct |
67 ms |
8692 KB |
Output is correct |
42 |
Correct |
64 ms |
8948 KB |
Output is correct |
43 |
Correct |
64 ms |
9020 KB |
Output is correct |
44 |
Correct |
167 ms |
18660 KB |
Output is correct |
45 |
Correct |
123 ms |
12936 KB |
Output is correct |
46 |
Correct |
148 ms |
15380 KB |
Output is correct |
47 |
Correct |
149 ms |
15284 KB |
Output is correct |
48 |
Correct |
154 ms |
17800 KB |
Output is correct |
49 |
Correct |
174 ms |
19532 KB |
Output is correct |
50 |
Correct |
171 ms |
16624 KB |
Output is correct |
51 |
Correct |
200 ms |
18192 KB |
Output is correct |
52 |
Correct |
204 ms |
16804 KB |
Output is correct |
53 |
Correct |
120 ms |
12212 KB |
Output is correct |
54 |
Correct |
157 ms |
17588 KB |
Output is correct |
55 |
Correct |
160 ms |
17868 KB |
Output is correct |