#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define all(a) a.begin(), a.end()
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using vi = vector<int>;
using oset = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
const int INF = 2e9 + 10;
int main() {
fast;
int n, x;
cin >> n >> x;
vi a(n);
for (int i = 0; i < n; ++i)
cin >> a[i];
vi b(n + 1, INF);
b[0] = -INF;
vi d(n);
for (int i = n - 1; i >= 0; --i) {
int j = lower_bound(all(b), -a[i]) - b.begin();
b[j] = -a[i];
d[i] = j;
}
b.assign(n + 1, INF);
b[0] = -INF;
int ans = 0;
for (int i = 0; i < n; ++i) {
int j = lower_bound(all(b), a[i] + x) - b.begin();
ans = max(ans, d[i] + j - 1);
j = lower_bound(all(b), a[i]) - b.begin();
b[j] = a[i];
}
cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
360 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
392 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
360 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
392 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
360 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
392 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
468 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
472 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
48 ms |
4768 KB |
Output is correct |
2 |
Correct |
47 ms |
4444 KB |
Output is correct |
3 |
Correct |
50 ms |
4524 KB |
Output is correct |
4 |
Correct |
51 ms |
4428 KB |
Output is correct |
5 |
Correct |
38 ms |
3960 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
1368 KB |
Output is correct |
2 |
Correct |
11 ms |
1368 KB |
Output is correct |
3 |
Correct |
11 ms |
1372 KB |
Output is correct |
4 |
Correct |
8 ms |
1112 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
9 ms |
1592 KB |
Output is correct |
7 |
Correct |
9 ms |
1368 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
2488 KB |
Output is correct |
2 |
Correct |
21 ms |
2612 KB |
Output is correct |
3 |
Correct |
41 ms |
4432 KB |
Output is correct |
4 |
Correct |
36 ms |
3928 KB |
Output is correct |
5 |
Correct |
17 ms |
2136 KB |
Output is correct |
6 |
Correct |
28 ms |
3676 KB |
Output is correct |
7 |
Correct |
31 ms |
4432 KB |
Output is correct |
8 |
Correct |
17 ms |
2392 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
360 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
456 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
392 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
468 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
472 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
48 ms |
4768 KB |
Output is correct |
28 |
Correct |
47 ms |
4444 KB |
Output is correct |
29 |
Correct |
50 ms |
4524 KB |
Output is correct |
30 |
Correct |
51 ms |
4428 KB |
Output is correct |
31 |
Correct |
38 ms |
3960 KB |
Output is correct |
32 |
Correct |
11 ms |
1368 KB |
Output is correct |
33 |
Correct |
11 ms |
1368 KB |
Output is correct |
34 |
Correct |
11 ms |
1372 KB |
Output is correct |
35 |
Correct |
8 ms |
1112 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
9 ms |
1592 KB |
Output is correct |
38 |
Correct |
9 ms |
1368 KB |
Output is correct |
39 |
Correct |
20 ms |
2488 KB |
Output is correct |
40 |
Correct |
21 ms |
2612 KB |
Output is correct |
41 |
Correct |
41 ms |
4432 KB |
Output is correct |
42 |
Correct |
36 ms |
3928 KB |
Output is correct |
43 |
Correct |
17 ms |
2136 KB |
Output is correct |
44 |
Correct |
28 ms |
3676 KB |
Output is correct |
45 |
Correct |
31 ms |
4432 KB |
Output is correct |
46 |
Correct |
17 ms |
2392 KB |
Output is correct |
47 |
Correct |
23 ms |
2392 KB |
Output is correct |
48 |
Correct |
22 ms |
2392 KB |
Output is correct |
49 |
Correct |
47 ms |
4436 KB |
Output is correct |
50 |
Correct |
37 ms |
3924 KB |
Output is correct |
51 |
Correct |
29 ms |
3072 KB |
Output is correct |
52 |
Correct |
36 ms |
4064 KB |
Output is correct |
53 |
Correct |
29 ms |
3932 KB |
Output is correct |
54 |
Correct |
32 ms |
4432 KB |
Output is correct |
55 |
Correct |
38 ms |
4444 KB |
Output is correct |