#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define endl '\n'
#define mask(i) (1LL << (i))
#define ull unsigned long long
#define ld long double
using namespace std;
const int mxN = 3e5 + 227;
const ll inf = 1e9 + 277;
const int mod = 1e9 + 7;
const ll infll = 1e18 + 7;
const int base = 307;
const int LOG = 20;
template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
if (a < b) {a = b; return true;} return false;
}
int n , x;
int a[mxN];
int l[mxN];
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
//freopen("task.inp" , "r" , stdin);
//freopen("task.out" , "w" , stdout);
cin >> n >> x;
for(int i = 1 ; i <= n ; i++) cin >> a[i];
int res = 0;
vector<ll> lis(n , infll);
for(int i = 1 ; i <= n ; i++) {
int pos = lower_bound(lis.begin() , lis.end() , a[i]) - lis.begin();
l[i] = pos + 1;
maximize(res , l[i]);
lis[pos] = a[i];
}
lis.assign(n , infll);
for(int i = n ; i >= 1 ; i--) {
int pos = lower_bound(lis.begin() , lis.end() , -(a[i] - x)) - lis.begin();
maximize(res , l[i] + pos);
pos = lower_bound(lis.begin() , lis.end() , -a[i]) - lis.begin();
lis[pos] = -a[i];
}
cout << res;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
332 KB |
Output is correct |
26 |
Correct |
1 ms |
324 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
49 ms |
3380 KB |
Output is correct |
2 |
Correct |
48 ms |
3396 KB |
Output is correct |
3 |
Correct |
57 ms |
3460 KB |
Output is correct |
4 |
Correct |
50 ms |
3324 KB |
Output is correct |
5 |
Correct |
34 ms |
3352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
12 ms |
1100 KB |
Output is correct |
2 |
Correct |
12 ms |
1100 KB |
Output is correct |
3 |
Correct |
12 ms |
1100 KB |
Output is correct |
4 |
Correct |
9 ms |
1100 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
9 ms |
1356 KB |
Output is correct |
7 |
Correct |
12 ms |
1608 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
22 ms |
1836 KB |
Output is correct |
2 |
Correct |
23 ms |
2764 KB |
Output is correct |
3 |
Correct |
47 ms |
5304 KB |
Output is correct |
4 |
Correct |
38 ms |
4540 KB |
Output is correct |
5 |
Correct |
18 ms |
2380 KB |
Output is correct |
6 |
Correct |
29 ms |
4420 KB |
Output is correct |
7 |
Correct |
34 ms |
5068 KB |
Output is correct |
8 |
Correct |
19 ms |
2892 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
332 KB |
Output is correct |
16 |
Correct |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
332 KB |
Output is correct |
22 |
Correct |
1 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
332 KB |
Output is correct |
26 |
Correct |
1 ms |
324 KB |
Output is correct |
27 |
Correct |
49 ms |
3380 KB |
Output is correct |
28 |
Correct |
48 ms |
3396 KB |
Output is correct |
29 |
Correct |
57 ms |
3460 KB |
Output is correct |
30 |
Correct |
50 ms |
3324 KB |
Output is correct |
31 |
Correct |
34 ms |
3352 KB |
Output is correct |
32 |
Correct |
12 ms |
1100 KB |
Output is correct |
33 |
Correct |
12 ms |
1100 KB |
Output is correct |
34 |
Correct |
12 ms |
1100 KB |
Output is correct |
35 |
Correct |
9 ms |
1100 KB |
Output is correct |
36 |
Correct |
0 ms |
204 KB |
Output is correct |
37 |
Correct |
9 ms |
1356 KB |
Output is correct |
38 |
Correct |
12 ms |
1608 KB |
Output is correct |
39 |
Correct |
22 ms |
1836 KB |
Output is correct |
40 |
Correct |
23 ms |
2764 KB |
Output is correct |
41 |
Correct |
47 ms |
5304 KB |
Output is correct |
42 |
Correct |
38 ms |
4540 KB |
Output is correct |
43 |
Correct |
18 ms |
2380 KB |
Output is correct |
44 |
Correct |
29 ms |
4420 KB |
Output is correct |
45 |
Correct |
34 ms |
5068 KB |
Output is correct |
46 |
Correct |
19 ms |
2892 KB |
Output is correct |
47 |
Correct |
24 ms |
2788 KB |
Output is correct |
48 |
Correct |
26 ms |
2780 KB |
Output is correct |
49 |
Correct |
55 ms |
5304 KB |
Output is correct |
50 |
Correct |
36 ms |
4528 KB |
Output is correct |
51 |
Correct |
31 ms |
3512 KB |
Output is correct |
52 |
Correct |
38 ms |
4656 KB |
Output is correct |
53 |
Correct |
31 ms |
4676 KB |
Output is correct |
54 |
Correct |
35 ms |
5328 KB |
Output is correct |
55 |
Correct |
41 ms |
5332 KB |
Output is correct |