#include <bits/stdc++.h>
using namespace std;
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<'\n'
#define dbgv(v) cout<<#v<<" = "; for(auto x : v) cout<<x<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) #x<<'='<<(x)<<' '
#define sep cout<<"---------------"<<endl
#define kill(x) {cout<<x<<'\n'; return;}
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define sz(x) int(x.size())
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pli pair<ll, int>
#define pil pair<int, ll>
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const int N = 2e5+5;
int n, x, a[N], b[N], lis_pre[N], lis_suf[N], fen[2][N];
vector<int> temp;
void add(int l, int x, int t){
while(l <= sz(temp)) maxm(fen[t][l], x), l += (l & -l);
}
int get(int r, int t){
int res = 0;
while(r <= sz(temp) and r > 0) maxm(res, fen[t][r]), r -= (r & -r);
return res;
}
void Solve(){
cin >> n >> x;
f(i, 0, n) cin >> a[i], temp.pb(a[i]), b[i] = a[i];
sort(all(temp));
temp.resize(unique(all(temp)) - temp.begin());
f(i, 0, n) a[i] = lower_bound(all(temp), a[i]) - temp.begin() + 1;
f(i, 0, n) lis_pre[i] = get(a[i]-1, 0) + 1, add(a[i], lis_pre[i], 0);
f_(i, n-1, 0){
int t1 = a[i] + 1;
lis_suf[i] = get(sz(temp) + 1 - t1, 1) + 1, add(sz(temp) + 1 - a[i], lis_suf[i], 1);
}
int ans = 0;
f(i, 1, sz(temp)+1) fen[0][i] = fen[1][i] = 0;
f_(i, n-1, 0){
int t1 = b[i] - x;
int p = upper_bound(all(temp), t1) - temp.begin() + 1;
if(p <= n) maxm(ans, lis_pre[i] + get(sz(temp) + 1 - p, 1));
add(sz(temp) + 1 - a[i], lis_suf[i], 1);
}
f(i, 0, n){
int t1 = b[i] + x;
int p = lower_bound(all(temp), t1) - temp.begin();
if(p) maxm(ans, lis_suf[i] + get(p, 0));
add(a[i], lis_pre[i], 0);
}
cout<<ans<<'\n';
}
int main(){
ios :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
int tt;
//cin >> tt;
tt = 1;
while(tt--){
Solve();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2396 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2396 KB |
Output is correct |
26 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
137 ms |
6020 KB |
Output is correct |
2 |
Correct |
131 ms |
5896 KB |
Output is correct |
3 |
Correct |
131 ms |
6132 KB |
Output is correct |
4 |
Correct |
131 ms |
5884 KB |
Output is correct |
5 |
Correct |
65 ms |
5072 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
27 ms |
3292 KB |
Output is correct |
2 |
Correct |
28 ms |
3296 KB |
Output is correct |
3 |
Correct |
28 ms |
3296 KB |
Output is correct |
4 |
Correct |
14 ms |
3040 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
15 ms |
3112 KB |
Output is correct |
7 |
Correct |
23 ms |
3296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
41 ms |
4204 KB |
Output is correct |
2 |
Correct |
39 ms |
4096 KB |
Output is correct |
3 |
Correct |
86 ms |
5840 KB |
Output is correct |
4 |
Correct |
52 ms |
5064 KB |
Output is correct |
5 |
Correct |
26 ms |
4056 KB |
Output is correct |
6 |
Correct |
47 ms |
5848 KB |
Output is correct |
7 |
Correct |
51 ms |
5824 KB |
Output is correct |
8 |
Correct |
37 ms |
4096 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
1 ms |
4444 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
1 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
4444 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
1 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
1 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2396 KB |
Output is correct |
22 |
Correct |
1 ms |
2396 KB |
Output is correct |
23 |
Correct |
1 ms |
2396 KB |
Output is correct |
24 |
Correct |
1 ms |
2396 KB |
Output is correct |
25 |
Correct |
1 ms |
2396 KB |
Output is correct |
26 |
Correct |
1 ms |
2396 KB |
Output is correct |
27 |
Correct |
137 ms |
6020 KB |
Output is correct |
28 |
Correct |
131 ms |
5896 KB |
Output is correct |
29 |
Correct |
131 ms |
6132 KB |
Output is correct |
30 |
Correct |
131 ms |
5884 KB |
Output is correct |
31 |
Correct |
65 ms |
5072 KB |
Output is correct |
32 |
Correct |
27 ms |
3292 KB |
Output is correct |
33 |
Correct |
28 ms |
3296 KB |
Output is correct |
34 |
Correct |
28 ms |
3296 KB |
Output is correct |
35 |
Correct |
14 ms |
3040 KB |
Output is correct |
36 |
Correct |
0 ms |
2396 KB |
Output is correct |
37 |
Correct |
15 ms |
3112 KB |
Output is correct |
38 |
Correct |
23 ms |
3296 KB |
Output is correct |
39 |
Correct |
41 ms |
4204 KB |
Output is correct |
40 |
Correct |
39 ms |
4096 KB |
Output is correct |
41 |
Correct |
86 ms |
5840 KB |
Output is correct |
42 |
Correct |
52 ms |
5064 KB |
Output is correct |
43 |
Correct |
26 ms |
4056 KB |
Output is correct |
44 |
Correct |
47 ms |
5848 KB |
Output is correct |
45 |
Correct |
51 ms |
5824 KB |
Output is correct |
46 |
Correct |
37 ms |
4096 KB |
Output is correct |
47 |
Correct |
60 ms |
4048 KB |
Output is correct |
48 |
Correct |
59 ms |
4048 KB |
Output is correct |
49 |
Correct |
129 ms |
5896 KB |
Output is correct |
50 |
Correct |
59 ms |
5072 KB |
Output is correct |
51 |
Correct |
48 ms |
4812 KB |
Output is correct |
52 |
Correct |
75 ms |
5880 KB |
Output is correct |
53 |
Correct |
51 ms |
5840 KB |
Output is correct |
54 |
Correct |
52 ms |
5948 KB |
Output is correct |
55 |
Correct |
103 ms |
5884 KB |
Output is correct |