#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r){return l+rng()%(r-l+1);}
#define forinc(a,b,c) for(int a=b, _c=c; a<=_c; ++a)
#define fordec(a,b,c) for(int a=b, _c=c; a>=_c; --a)
#define forv(a,b) for(auto &a:b)
#define fasty ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
#define ar array
#define ii pair<int,int>
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define all(a) begin(a),end(a)
#define reset(f,x) memset(f,x,sizeof(f))
#define bit(x,i) (x>>(i-1)&1ll)
#define on(x,i) (x|(1ll<<(i-1)))
#define off(x,i) (x&~(1ll<<(i-1)))
const int N=2e5+5;
int n,x,a[N],b[N],pf[N],m;
int32_t main(){
fasty;
cin>>n>>x;
forinc(i,1,n) cin>>a[i];
forinc(i,1,n){
int k=lower_bound(b+1, b+m+1, a[i])-b;
b[k]=a[i];
m=max(m,k);
pf[i]=k;
}
int ans=0; m=0;
fordec(i,n,1){
ans=max(ans, (int)(lower_bound(b+1, b+m+1, a[i], greater<int>())-b-1)+pf[i]);
int k=lower_bound(b+1, b+m+1, a[i]+x, greater<int>())-b;
b[k]=a[i]+x;
m=max(m,k);
}
cout<<ans<<'\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
0 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
0 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
0 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
0 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
1 ms |
384 KB |
Output is correct |
22 |
Correct |
1 ms |
384 KB |
Output is correct |
23 |
Correct |
1 ms |
384 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
384 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
59 ms |
3832 KB |
Output is correct |
2 |
Correct |
59 ms |
3888 KB |
Output is correct |
3 |
Correct |
58 ms |
3832 KB |
Output is correct |
4 |
Correct |
58 ms |
3832 KB |
Output is correct |
5 |
Correct |
31 ms |
3456 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
1280 KB |
Output is correct |
2 |
Correct |
14 ms |
1280 KB |
Output is correct |
3 |
Correct |
15 ms |
1280 KB |
Output is correct |
4 |
Correct |
8 ms |
1152 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
8 ms |
1152 KB |
Output is correct |
7 |
Correct |
11 ms |
1280 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
24 ms |
2048 KB |
Output is correct |
2 |
Correct |
24 ms |
2048 KB |
Output is correct |
3 |
Correct |
50 ms |
3892 KB |
Output is correct |
4 |
Correct |
31 ms |
3448 KB |
Output is correct |
5 |
Correct |
15 ms |
1920 KB |
Output is correct |
6 |
Correct |
27 ms |
3456 KB |
Output is correct |
7 |
Correct |
34 ms |
4096 KB |
Output is correct |
8 |
Correct |
20 ms |
2176 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
0 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
0 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
1 ms |
384 KB |
Output is correct |
22 |
Correct |
1 ms |
384 KB |
Output is correct |
23 |
Correct |
1 ms |
384 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
384 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
59 ms |
3832 KB |
Output is correct |
28 |
Correct |
59 ms |
3888 KB |
Output is correct |
29 |
Correct |
58 ms |
3832 KB |
Output is correct |
30 |
Correct |
58 ms |
3832 KB |
Output is correct |
31 |
Correct |
31 ms |
3456 KB |
Output is correct |
32 |
Correct |
14 ms |
1280 KB |
Output is correct |
33 |
Correct |
14 ms |
1280 KB |
Output is correct |
34 |
Correct |
15 ms |
1280 KB |
Output is correct |
35 |
Correct |
8 ms |
1152 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
37 |
Correct |
8 ms |
1152 KB |
Output is correct |
38 |
Correct |
11 ms |
1280 KB |
Output is correct |
39 |
Correct |
24 ms |
2048 KB |
Output is correct |
40 |
Correct |
24 ms |
2048 KB |
Output is correct |
41 |
Correct |
50 ms |
3892 KB |
Output is correct |
42 |
Correct |
31 ms |
3448 KB |
Output is correct |
43 |
Correct |
15 ms |
1920 KB |
Output is correct |
44 |
Correct |
27 ms |
3456 KB |
Output is correct |
45 |
Correct |
34 ms |
4096 KB |
Output is correct |
46 |
Correct |
20 ms |
2176 KB |
Output is correct |
47 |
Correct |
29 ms |
2048 KB |
Output is correct |
48 |
Correct |
29 ms |
2048 KB |
Output is correct |
49 |
Correct |
63 ms |
3832 KB |
Output is correct |
50 |
Correct |
31 ms |
3456 KB |
Output is correct |
51 |
Correct |
27 ms |
2816 KB |
Output is correct |
52 |
Correct |
31 ms |
3584 KB |
Output is correct |
53 |
Correct |
30 ms |
3584 KB |
Output is correct |
54 |
Correct |
35 ms |
4216 KB |
Output is correct |
55 |
Correct |
46 ms |
3960 KB |
Output is correct |