#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll N, X;
ll A[200005], L[200005];
int main(){
cin.tie(0) -> sync_with_stdio(false);
cin >> N >> X;
for(int i = 0; i < N; i++){
cin >> A[i];
}
vector<ll> dp;
for(int i = 0; i < N; i++){
if(dp.empty() || dp.back() < A[i]){
dp.push_back(A[i]);
L[i] = dp.size();
} else {
ll j = lower_bound(dp.begin(), dp.end(), A[i]) - dp.begin();
dp[j] = A[i], L[i] = j + 1;
}
}
dp.clear();
ll ans = 0;
for(int i = N - 1; i >= 0; i--){
ans = max(ans, L[i] + (lower_bound(dp.begin(), dp.end(), -A[i] + X) - dp.begin()));
if(dp.empty() || dp.back() < -A[i]) dp.push_back(-A[i]);
else *lower_bound(dp.begin(), dp.end(), -A[i]) = -A[i];
}
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
51 ms |
3448 KB |
Output is correct |
2 |
Correct |
51 ms |
3400 KB |
Output is correct |
3 |
Correct |
50 ms |
3388 KB |
Output is correct |
4 |
Correct |
49 ms |
3404 KB |
Output is correct |
5 |
Correct |
26 ms |
4340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
12 ms |
1128 KB |
Output is correct |
2 |
Correct |
12 ms |
1088 KB |
Output is correct |
3 |
Correct |
14 ms |
1108 KB |
Output is correct |
4 |
Correct |
7 ms |
1368 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
6 ms |
1368 KB |
Output is correct |
7 |
Correct |
10 ms |
1124 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
1896 KB |
Output is correct |
2 |
Correct |
21 ms |
1876 KB |
Output is correct |
3 |
Correct |
43 ms |
3452 KB |
Output is correct |
4 |
Correct |
28 ms |
4304 KB |
Output is correct |
5 |
Correct |
12 ms |
2340 KB |
Output is correct |
6 |
Correct |
20 ms |
4176 KB |
Output is correct |
7 |
Correct |
29 ms |
4144 KB |
Output is correct |
8 |
Correct |
18 ms |
1908 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
0 ms |
212 KB |
Output is correct |
14 |
Correct |
0 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
340 KB |
Output is correct |
21 |
Correct |
1 ms |
340 KB |
Output is correct |
22 |
Correct |
1 ms |
336 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
51 ms |
3448 KB |
Output is correct |
28 |
Correct |
51 ms |
3400 KB |
Output is correct |
29 |
Correct |
50 ms |
3388 KB |
Output is correct |
30 |
Correct |
49 ms |
3404 KB |
Output is correct |
31 |
Correct |
26 ms |
4340 KB |
Output is correct |
32 |
Correct |
12 ms |
1128 KB |
Output is correct |
33 |
Correct |
12 ms |
1088 KB |
Output is correct |
34 |
Correct |
14 ms |
1108 KB |
Output is correct |
35 |
Correct |
7 ms |
1368 KB |
Output is correct |
36 |
Correct |
0 ms |
212 KB |
Output is correct |
37 |
Correct |
6 ms |
1368 KB |
Output is correct |
38 |
Correct |
10 ms |
1124 KB |
Output is correct |
39 |
Correct |
20 ms |
1896 KB |
Output is correct |
40 |
Correct |
21 ms |
1876 KB |
Output is correct |
41 |
Correct |
43 ms |
3452 KB |
Output is correct |
42 |
Correct |
28 ms |
4304 KB |
Output is correct |
43 |
Correct |
12 ms |
2340 KB |
Output is correct |
44 |
Correct |
20 ms |
4176 KB |
Output is correct |
45 |
Correct |
29 ms |
4144 KB |
Output is correct |
46 |
Correct |
18 ms |
1908 KB |
Output is correct |
47 |
Correct |
27 ms |
2768 KB |
Output is correct |
48 |
Correct |
25 ms |
2852 KB |
Output is correct |
49 |
Correct |
61 ms |
5372 KB |
Output is correct |
50 |
Correct |
27 ms |
5448 KB |
Output is correct |
51 |
Correct |
21 ms |
4436 KB |
Output is correct |
52 |
Correct |
25 ms |
5536 KB |
Output is correct |
53 |
Correct |
24 ms |
5568 KB |
Output is correct |
54 |
Correct |
26 ms |
6268 KB |
Output is correct |
55 |
Correct |
43 ms |
5316 KB |
Output is correct |