#include <bits/stdc++.h>
using namespace std;
#define FOR(i, j, k) for(int i=(j); i<=(k); i++)
#define FFOR(i, j, k) for(int i=(j); i<(k); i++)
#define DFOR(i, j, k) for(int i=(j); i>=(k); i--)
#define bug(x) cerr<<#x<<" = "<<(x)<<'\n'
#define pb push_back
#define mp make_pair
#define bit(s, i) (((s)>>(i))&1LL)
#define mask(i) ((1LL<<(i)))
#define builtin_popcount __builtin_popcountll
#define __builtin_popcount __builtin_popcountll
using ll=long long; using ld=long double;
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count()); const ld pi=acos(0)*2;
template <typename T> inline void read(T &x){char c; bool nega=0; while((!isdigit(c=getchar()))&&(c!='-')); if(c=='-'){nega=1; c=getchar();} x=c-48; while(isdigit(c=getchar())) x=x*10+c-48; if(nega) x=-x;}
template <typename T> inline void writep(T x){if(x>9) writep(x/10); putchar(x%10+48);}
template <typename T> inline void write(T x){if(x<0){ putchar('-'); x=-x;} writep(x);}
template <typename T> inline void writeln(T x){write(x); putchar('\n');}
#define taskname "Global"
int n, x;
int a[200001];
int l[200001];
vector <int> f;
int main(){
#ifdef Aria
if(fopen(taskname".in", "r"))
freopen(taskname".in", "r", stdin);
#endif // Aria
read(n);
read(x);
FOR(i, 1, n) read(a[i]);
f.pb(-1e9);
FOR(i, 1, n){
if(a[i]>f.back()){
l[i]=f.size();
f.pb(a[i]);
}
else{
l[i]=lower_bound(f.begin(), f.end(), a[i])-f.begin();
f[l[i]]=min(f[l[i]], a[i]);
}
}
f.clear();
f.pb(1.5e9);
int ans=0;
DFOR(i, n, 1){
int t=a[i]-x;
if(t<f.back()) ans=max(ans, (int)(l[i]+f.size()-1));
else ans=max(ans, (int)(l[i]+lower_bound(f.begin(), f.end(), t, greater<int>())-f.begin()-1));
if(a[i]<f.back()) f.pb(a[i]);
else{
t=lower_bound(f.begin(), f.end(), a[i], greater<int>())-f.begin();
f[t]=max(f[t], a[i]);
}
}
writeln(ans);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
460 KB |
Output is correct |
12 |
Correct |
2 ms |
432 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
432 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
460 KB |
Output is correct |
12 |
Correct |
2 ms |
432 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
432 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
384 KB |
Output is correct |
20 |
Correct |
2 ms |
384 KB |
Output is correct |
21 |
Correct |
2 ms |
384 KB |
Output is correct |
22 |
Correct |
2 ms |
384 KB |
Output is correct |
23 |
Correct |
2 ms |
380 KB |
Output is correct |
24 |
Correct |
2 ms |
384 KB |
Output is correct |
25 |
Correct |
2 ms |
384 KB |
Output is correct |
26 |
Correct |
3 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
1912 KB |
Output is correct |
2 |
Correct |
50 ms |
1912 KB |
Output is correct |
3 |
Correct |
58 ms |
1892 KB |
Output is correct |
4 |
Correct |
49 ms |
1920 KB |
Output is correct |
5 |
Correct |
20 ms |
2424 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
768 KB |
Output is correct |
2 |
Correct |
13 ms |
768 KB |
Output is correct |
3 |
Correct |
13 ms |
768 KB |
Output is correct |
4 |
Correct |
7 ms |
936 KB |
Output is correct |
5 |
Correct |
2 ms |
256 KB |
Output is correct |
6 |
Correct |
7 ms |
1280 KB |
Output is correct |
7 |
Correct |
11 ms |
1252 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
21 ms |
1152 KB |
Output is correct |
2 |
Correct |
21 ms |
1152 KB |
Output is correct |
3 |
Correct |
42 ms |
1884 KB |
Output is correct |
4 |
Correct |
18 ms |
2424 KB |
Output is correct |
5 |
Correct |
10 ms |
1408 KB |
Output is correct |
6 |
Correct |
16 ms |
2296 KB |
Output is correct |
7 |
Correct |
23 ms |
2300 KB |
Output is correct |
8 |
Correct |
18 ms |
1152 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
256 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
384 KB |
Output is correct |
4 |
Correct |
2 ms |
384 KB |
Output is correct |
5 |
Correct |
2 ms |
384 KB |
Output is correct |
6 |
Correct |
2 ms |
384 KB |
Output is correct |
7 |
Correct |
2 ms |
384 KB |
Output is correct |
8 |
Correct |
2 ms |
384 KB |
Output is correct |
9 |
Correct |
2 ms |
384 KB |
Output is correct |
10 |
Correct |
2 ms |
384 KB |
Output is correct |
11 |
Correct |
2 ms |
460 KB |
Output is correct |
12 |
Correct |
2 ms |
432 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
2 ms |
432 KB |
Output is correct |
15 |
Correct |
2 ms |
256 KB |
Output is correct |
16 |
Correct |
2 ms |
256 KB |
Output is correct |
17 |
Correct |
3 ms |
384 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
2 ms |
384 KB |
Output is correct |
20 |
Correct |
2 ms |
384 KB |
Output is correct |
21 |
Correct |
2 ms |
384 KB |
Output is correct |
22 |
Correct |
2 ms |
384 KB |
Output is correct |
23 |
Correct |
2 ms |
380 KB |
Output is correct |
24 |
Correct |
2 ms |
384 KB |
Output is correct |
25 |
Correct |
2 ms |
384 KB |
Output is correct |
26 |
Correct |
3 ms |
384 KB |
Output is correct |
27 |
Correct |
51 ms |
1912 KB |
Output is correct |
28 |
Correct |
50 ms |
1912 KB |
Output is correct |
29 |
Correct |
58 ms |
1892 KB |
Output is correct |
30 |
Correct |
49 ms |
1920 KB |
Output is correct |
31 |
Correct |
20 ms |
2424 KB |
Output is correct |
32 |
Correct |
13 ms |
768 KB |
Output is correct |
33 |
Correct |
13 ms |
768 KB |
Output is correct |
34 |
Correct |
13 ms |
768 KB |
Output is correct |
35 |
Correct |
7 ms |
936 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
7 ms |
1280 KB |
Output is correct |
38 |
Correct |
11 ms |
1252 KB |
Output is correct |
39 |
Correct |
21 ms |
1152 KB |
Output is correct |
40 |
Correct |
21 ms |
1152 KB |
Output is correct |
41 |
Correct |
42 ms |
1884 KB |
Output is correct |
42 |
Correct |
18 ms |
2424 KB |
Output is correct |
43 |
Correct |
10 ms |
1408 KB |
Output is correct |
44 |
Correct |
16 ms |
2296 KB |
Output is correct |
45 |
Correct |
23 ms |
2300 KB |
Output is correct |
46 |
Correct |
18 ms |
1152 KB |
Output is correct |
47 |
Correct |
26 ms |
2048 KB |
Output is correct |
48 |
Correct |
25 ms |
2048 KB |
Output is correct |
49 |
Correct |
50 ms |
3804 KB |
Output is correct |
50 |
Correct |
20 ms |
3704 KB |
Output is correct |
51 |
Correct |
15 ms |
2940 KB |
Output is correct |
52 |
Correct |
20 ms |
3704 KB |
Output is correct |
53 |
Correct |
17 ms |
3704 KB |
Output is correct |
54 |
Correct |
24 ms |
4340 KB |
Output is correct |
55 |
Correct |
42 ms |
3832 KB |
Output is correct |