#include <bits/stdc++.h>
using namespace std;
using lint = long long;
const lint INF = 1e15;
lint N, X;
lint A[200005];
lint lis[200005];
lint lds[200005];
lint anslis[200005];
lint LIS() {
for (int i = 0; i <= N; i++) lis[i] = INF, lds[i] = -INF;
lis[0] = -INF, lds[N] = INF;
lint res = 0;
for (lint i = 0; i < N; i++) {
lint j = upper_bound(lis, lis + N + 1, A[i]) - lis;
lis[j] = A[i], res = max(res, j);
anslis[i] = j;
}
for (lint i = N - 1; i >= 0; i--) {
lint j = upper_bound(lds, lds + N + 1, A[i] - X) - lds;
res = max(res, anslis[i] + N - j);
j = lower_bound(lds, lds + N + 1, A[i]) - lds - 1;
lds[j] = A[i];
}
return res;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> N >> X;
for (int i = 0; i < N; i++) cin >> A[i];
lint ans = LIS();
cout << ans << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
82 ms |
8568 KB |
Output is correct |
2 |
Correct |
83 ms |
8564 KB |
Output is correct |
3 |
Correct |
83 ms |
8568 KB |
Output is correct |
4 |
Correct |
136 ms |
8568 KB |
Output is correct |
5 |
Incorrect |
75 ms |
7832 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
21 ms |
2424 KB |
Output is correct |
2 |
Correct |
21 ms |
2424 KB |
Output is correct |
3 |
Correct |
21 ms |
2424 KB |
Output is correct |
4 |
Incorrect |
17 ms |
2168 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
36 ms |
4472 KB |
Output is correct |
2 |
Correct |
36 ms |
4532 KB |
Output is correct |
3 |
Correct |
74 ms |
8564 KB |
Output is correct |
4 |
Incorrect |
66 ms |
7736 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |