#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define ar array
const int LOG = 20;
const int MOD = 1e9 + 7;
const int INF = 1e18;
const int N = 2e5 + 20;
int A[N];
int pref[N];
signed main() {
int n,x;
cin>>n>>x;
for (int i = 0; i < n; i++)cin >> A[i];
int dp[n];
for(int i = 0;i < n;i++)dp[i] = INF;
int ans = 0;
for (int i = 0; i < n; i++) {
int j = lower_bound(dp, dp + n, A[i]) - dp;
dp[j] = A[i];
pref[i] = j + 1;
ans = max(ans, pref[i]);
}
for(int i = 0;i < n;i++)dp[i] = INF;
for (int i = n - 1; i >= 0; i--) {
int j = lower_bound(dp, dp + n, -A[i] + x) - dp;
ans = max(ans, pref[i] + j);
int k =lower_bound(dp, dp + n, -A[i]) - dp;
dp[k] = -A[i];
}
cout<<ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
376 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 |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
376 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 |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
448 KB |
Output is correct |
16 |
Correct |
1 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 |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
376 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 |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
448 KB |
Output is correct |
16 |
Correct |
1 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 |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
448 KB |
Output is correct |
26 |
Correct |
1 ms |
452 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
88 ms |
6932 KB |
Output is correct |
2 |
Correct |
84 ms |
6832 KB |
Output is correct |
3 |
Correct |
77 ms |
6996 KB |
Output is correct |
4 |
Correct |
75 ms |
6948 KB |
Output is correct |
5 |
Correct |
52 ms |
6212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
19 ms |
1884 KB |
Output is correct |
2 |
Correct |
18 ms |
1884 KB |
Output is correct |
3 |
Correct |
18 ms |
1884 KB |
Output is correct |
4 |
Correct |
13 ms |
1884 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
12 ms |
1856 KB |
Output is correct |
7 |
Correct |
29 ms |
1888 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
44 ms |
3672 KB |
Output is correct |
2 |
Correct |
37 ms |
3664 KB |
Output is correct |
3 |
Correct |
75 ms |
6904 KB |
Output is correct |
4 |
Correct |
50 ms |
6228 KB |
Output is correct |
5 |
Correct |
25 ms |
3152 KB |
Output is correct |
6 |
Correct |
49 ms |
5828 KB |
Output is correct |
7 |
Correct |
66 ms |
6740 KB |
Output is correct |
8 |
Correct |
35 ms |
3660 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
376 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 |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
448 KB |
Output is correct |
16 |
Correct |
1 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 |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
448 KB |
Output is correct |
26 |
Correct |
1 ms |
452 KB |
Output is correct |
27 |
Correct |
88 ms |
6932 KB |
Output is correct |
28 |
Correct |
84 ms |
6832 KB |
Output is correct |
29 |
Correct |
77 ms |
6996 KB |
Output is correct |
30 |
Correct |
75 ms |
6948 KB |
Output is correct |
31 |
Correct |
52 ms |
6212 KB |
Output is correct |
32 |
Correct |
19 ms |
1884 KB |
Output is correct |
33 |
Correct |
18 ms |
1884 KB |
Output is correct |
34 |
Correct |
18 ms |
1884 KB |
Output is correct |
35 |
Correct |
13 ms |
1884 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
12 ms |
1856 KB |
Output is correct |
38 |
Correct |
29 ms |
1888 KB |
Output is correct |
39 |
Correct |
44 ms |
3672 KB |
Output is correct |
40 |
Correct |
37 ms |
3664 KB |
Output is correct |
41 |
Correct |
75 ms |
6904 KB |
Output is correct |
42 |
Correct |
50 ms |
6228 KB |
Output is correct |
43 |
Correct |
25 ms |
3152 KB |
Output is correct |
44 |
Correct |
49 ms |
5828 KB |
Output is correct |
45 |
Correct |
66 ms |
6740 KB |
Output is correct |
46 |
Correct |
35 ms |
3660 KB |
Output is correct |
47 |
Correct |
36 ms |
3668 KB |
Output is correct |
48 |
Correct |
38 ms |
3660 KB |
Output is correct |
49 |
Correct |
77 ms |
6992 KB |
Output is correct |
50 |
Correct |
50 ms |
6092 KB |
Output is correct |
51 |
Correct |
51 ms |
4784 KB |
Output is correct |
52 |
Correct |
54 ms |
6236 KB |
Output is correct |
53 |
Correct |
50 ms |
6228 KB |
Output is correct |
54 |
Correct |
64 ms |
6996 KB |
Output is correct |
55 |
Correct |
67 ms |
6996 KB |
Output is correct |