/*
* AUTHOR : Hydrolyzed~
* SCHOOL : RYW
* TASK : Global Warming
* ALGO : Dynamic Programming
* DATE : 23 Mar 2023
* */
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
#ifndef _DEBUG
// @==== Libary ====@ //
// @================@ //
#endif
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
template <typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update> ;
// @=== Debugger ===@ //
#ifdef _DEBUG
#include "debug.hpp"
#else
#define dbg(...) 0
#endif
// @================@ //
using ll = long long;
const int MxN = 200020;
int lis[MxN], lds[MxN], lds_size[MxN], lis_size[MxN], a[MxN];
inline void solution(){
int n, x;
cin >> n >> x;
for(int i=1; i<=n; ++i){
cin >> a[i];
}
int sz = 0;
for(int i=n; i>=1; --i){
int idx = lower_bound(lds, lds + sz, -a[i]) - lds;
if(idx == sz){
sz++;
}
lds[idx] = -a[i];
lds_size[i] = idx + 1;
}
sz = 0;
int res = 0;
for(int i=1; i<=n; ++i){
int idx = lower_bound(lis, lis + sz, a[i] + x) - lis;
res = max(res, lds_size[i] + idx);
idx = lower_bound(lis, lis + sz, a[i]) - lis;
if(idx == sz){
sz++;
}
lis[idx] = a[i];
lis_size[i] = sz;
}
cout << max(res, lis_size[n]);
return ;
}
signed main(){
cin.tie(nullptr)->ios::sync_with_stdio(false);
int q = 1;
// cin >> q;
while(q--){
solution();
cout << "\n";
}
return 0;
}
// https://github.com/MasterIceZ/archive/tree/main/cpp-template
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
51 ms |
2632 KB |
Output is correct |
2 |
Correct |
48 ms |
2568 KB |
Output is correct |
3 |
Correct |
49 ms |
2568 KB |
Output is correct |
4 |
Correct |
49 ms |
2600 KB |
Output is correct |
5 |
Correct |
26 ms |
3344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
852 KB |
Output is correct |
2 |
Correct |
11 ms |
940 KB |
Output is correct |
3 |
Correct |
12 ms |
852 KB |
Output is correct |
4 |
Correct |
7 ms |
1108 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
7 ms |
1340 KB |
Output is correct |
7 |
Correct |
10 ms |
1364 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
1460 KB |
Output is correct |
2 |
Correct |
21 ms |
2428 KB |
Output is correct |
3 |
Correct |
43 ms |
4484 KB |
Output is correct |
4 |
Correct |
27 ms |
4604 KB |
Output is correct |
5 |
Correct |
15 ms |
2400 KB |
Output is correct |
6 |
Correct |
24 ms |
4468 KB |
Output is correct |
7 |
Correct |
27 ms |
5092 KB |
Output is correct |
8 |
Correct |
18 ms |
2372 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
0 ms |
340 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
340 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
0 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
340 KB |
Output is correct |
17 |
Correct |
0 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
51 ms |
2632 KB |
Output is correct |
28 |
Correct |
48 ms |
2568 KB |
Output is correct |
29 |
Correct |
49 ms |
2568 KB |
Output is correct |
30 |
Correct |
49 ms |
2600 KB |
Output is correct |
31 |
Correct |
26 ms |
3344 KB |
Output is correct |
32 |
Correct |
11 ms |
852 KB |
Output is correct |
33 |
Correct |
11 ms |
940 KB |
Output is correct |
34 |
Correct |
12 ms |
852 KB |
Output is correct |
35 |
Correct |
7 ms |
1108 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
7 ms |
1340 KB |
Output is correct |
38 |
Correct |
10 ms |
1364 KB |
Output is correct |
39 |
Correct |
20 ms |
1460 KB |
Output is correct |
40 |
Correct |
21 ms |
2428 KB |
Output is correct |
41 |
Correct |
43 ms |
4484 KB |
Output is correct |
42 |
Correct |
27 ms |
4604 KB |
Output is correct |
43 |
Correct |
15 ms |
2400 KB |
Output is correct |
44 |
Correct |
24 ms |
4468 KB |
Output is correct |
45 |
Correct |
27 ms |
5092 KB |
Output is correct |
46 |
Correct |
18 ms |
2372 KB |
Output is correct |
47 |
Correct |
24 ms |
2380 KB |
Output is correct |
48 |
Correct |
28 ms |
2464 KB |
Output is correct |
49 |
Correct |
50 ms |
4492 KB |
Output is correct |
50 |
Correct |
27 ms |
4540 KB |
Output is correct |
51 |
Correct |
24 ms |
3636 KB |
Output is correct |
52 |
Correct |
28 ms |
4684 KB |
Output is correct |
53 |
Correct |
28 ms |
4628 KB |
Output is correct |
54 |
Correct |
29 ms |
5320 KB |
Output is correct |
55 |
Correct |
40 ms |
4528 KB |
Output is correct |