#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <algorithm>
using namespace std;
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, x;
cin >> n >> x;
vector<int> pfxlissz(n);
vector<int> lis(0);
vector<int> t(n);
for (int i = 0; i < n; i++) cin >> t[i];
for (int i = 0; i < n; i++)
{
pfxlissz[i] = lis.size();
if (lis.empty() || (lis.back() < x + t[i])) pfxlissz[i]++;
if (lis.empty() || (lis.back() < t[i])) lis.push_back(t[i]);
int l = lower_bound(lis.begin(), lis.end(), t[i]) - lis.begin();
lis[l] = t[i];
}
vector<int> sfxldssz(n);
lis.clear();
for (int i = n - 1; i > -1; i--)
{
if (lis.empty() || (lis.back() + t[i] < 0)) lis.push_back(-t[i]);
sfxldssz[i] = lower_bound(lis.begin(), lis.end(), -t[i]) - lis.begin();
lis[sfxldssz[i]] = -t[i];
}
int ans = sfxldssz[0] + 1;
for (int i = 1; i < n; i++) ans = fmax(ans, pfxlissz[i] + sfxldssz[i]);
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
32 ms |
4700 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
8 ms |
1368 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
16 ms |
2396 KB |
Output is correct |
2 |
Correct |
17 ms |
2392 KB |
Output is correct |
3 |
Correct |
33 ms |
4736 KB |
Output is correct |
4 |
Correct |
18 ms |
4412 KB |
Output is correct |
5 |
Correct |
9 ms |
2528 KB |
Output is correct |
6 |
Correct |
17 ms |
4372 KB |
Output is correct |
7 |
Correct |
21 ms |
4816 KB |
Output is correct |
8 |
Correct |
14 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |