#include <bits/stdc++.h>
using namespace std;
const int nax = 2e5+10;
int pfx[nax];
void smx(int& a, int b) { a = max(a, b); }
int main() {
// freopen(".in", "r", stdin);
// freopen(".out", "w", stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
int n, x; cin >> n >> x;
vector<int> t(n);
for(int i = 0; i < n; i++) cin >> t[i];
int mx = 0;
vector<int> dp(n, INT_MAX);
for(int i = 0; i < n; i++) {
int j = (int) (lower_bound(begin(dp), end(dp), t[i])-begin(dp));
dp[j] = t[i];
pfx[i] = j+1;
smx(mx, pfx[i]);
}
dp = vector<int>(n, INT_MAX);
for(int i = n-1; i >= 0; i--) {
int pos = (int) (lower_bound(begin(dp), end(dp), -t[i]+x)-begin(dp));
smx(mx, pfx[i]+pos);
int j = (int) (lower_bound(begin(dp), end(dp), -t[i])-begin(dp));
dp[j] = -t[i];
}
cout << mx << endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
316 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 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 |
1 ms |
316 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
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 |
1 ms |
316 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
336 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 |
332 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
66 ms |
3396 KB |
Output is correct |
| 2 |
Correct |
64 ms |
5316 KB |
Output is correct |
| 3 |
Correct |
65 ms |
5292 KB |
Output is correct |
| 4 |
Correct |
63 ms |
5316 KB |
Output is correct |
| 5 |
Correct |
45 ms |
4552 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
15 ms |
1048 KB |
Output is correct |
| 2 |
Correct |
16 ms |
1484 KB |
Output is correct |
| 3 |
Correct |
15 ms |
1528 KB |
Output is correct |
| 4 |
Correct |
12 ms |
1356 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
12 ms |
1356 KB |
Output is correct |
| 7 |
Correct |
13 ms |
1612 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
28 ms |
1808 KB |
Output is correct |
| 2 |
Correct |
28 ms |
2748 KB |
Output is correct |
| 3 |
Correct |
57 ms |
5328 KB |
Output is correct |
| 4 |
Correct |
46 ms |
4556 KB |
Output is correct |
| 5 |
Correct |
24 ms |
2372 KB |
Output is correct |
| 6 |
Correct |
39 ms |
4428 KB |
Output is correct |
| 7 |
Correct |
46 ms |
5144 KB |
Output is correct |
| 8 |
Correct |
24 ms |
2764 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
316 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
204 KB |
Output is correct |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
324 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Correct |
1 ms |
204 KB |
Output is correct |
| 13 |
Correct |
1 ms |
204 KB |
Output is correct |
| 14 |
Correct |
1 ms |
204 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
1 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
336 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 |
332 KB |
Output is correct |
| 27 |
Correct |
66 ms |
3396 KB |
Output is correct |
| 28 |
Correct |
64 ms |
5316 KB |
Output is correct |
| 29 |
Correct |
65 ms |
5292 KB |
Output is correct |
| 30 |
Correct |
63 ms |
5316 KB |
Output is correct |
| 31 |
Correct |
45 ms |
4552 KB |
Output is correct |
| 32 |
Correct |
15 ms |
1048 KB |
Output is correct |
| 33 |
Correct |
16 ms |
1484 KB |
Output is correct |
| 34 |
Correct |
15 ms |
1528 KB |
Output is correct |
| 35 |
Correct |
12 ms |
1356 KB |
Output is correct |
| 36 |
Correct |
1 ms |
204 KB |
Output is correct |
| 37 |
Correct |
12 ms |
1356 KB |
Output is correct |
| 38 |
Correct |
13 ms |
1612 KB |
Output is correct |
| 39 |
Correct |
28 ms |
1808 KB |
Output is correct |
| 40 |
Correct |
28 ms |
2748 KB |
Output is correct |
| 41 |
Correct |
57 ms |
5328 KB |
Output is correct |
| 42 |
Correct |
46 ms |
4556 KB |
Output is correct |
| 43 |
Correct |
24 ms |
2372 KB |
Output is correct |
| 44 |
Correct |
39 ms |
4428 KB |
Output is correct |
| 45 |
Correct |
46 ms |
5144 KB |
Output is correct |
| 46 |
Correct |
24 ms |
2764 KB |
Output is correct |
| 47 |
Correct |
31 ms |
2756 KB |
Output is correct |
| 48 |
Correct |
31 ms |
2800 KB |
Output is correct |
| 49 |
Correct |
63 ms |
5316 KB |
Output is correct |
| 50 |
Correct |
45 ms |
4688 KB |
Output is correct |
| 51 |
Correct |
38 ms |
3448 KB |
Output is correct |
| 52 |
Correct |
47 ms |
4680 KB |
Output is correct |
| 53 |
Correct |
41 ms |
4676 KB |
Output is correct |
| 54 |
Correct |
46 ms |
5324 KB |
Output is correct |
| 55 |
Correct |
54 ms |
5324 KB |
Output is correct |
