#include "bits/stdc++.h"
using namespace std;
using ll = long long;
int dp[200050];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
// freopen("", "r", stdin);
// freopen("", "w", stdout);
int n, x; cin >> n >> x;
vector<int> v(n);
for (auto &a : v) cin >> a;
int ans = 0;
vector<int> lis;
for (int i = 0; i < n; i++) {
int pos = lower_bound(lis.begin(), lis.end(), v[i]) - lis.begin();
if (pos == lis.size()) {
lis.push_back(v[i]);
} else {
lis[pos] = v[i];
}
dp[i] = pos + 1;
ans = max(ans, dp[i]);
}
lis.clear();
for (int i = n-1; i >= 0; i--) {
int anspos = lower_bound(lis.begin(), lis.end(), -v[i] + x) - lis.begin();
ans = max(ans, dp[i] + anspos);
int pos = lower_bound(lis.begin(), lis.end(), -v[i]) - lis.begin();
if (pos == lis.size()) {
lis.push_back(-v[i]);
} else {
lis[pos] = -v[i];
}
}
cout << ans;
}
Compilation message
glo.cpp: In function 'int main()':
glo.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | if (pos == lis.size()) {
| ~~~~^~~~~~~~~~~~~
glo.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if (pos == lis.size()) {
| ~~~~^~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
252 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
252 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 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 |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
252 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 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 |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 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 |
204 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 |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
54 ms |
1772 KB |
Output is correct |
2 |
Correct |
56 ms |
3784 KB |
Output is correct |
3 |
Correct |
58 ms |
3752 KB |
Output is correct |
4 |
Correct |
56 ms |
3792 KB |
Output is correct |
5 |
Correct |
34 ms |
3528 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
13 ms |
716 KB |
Output is correct |
2 |
Correct |
13 ms |
716 KB |
Output is correct |
3 |
Correct |
13 ms |
660 KB |
Output is correct |
4 |
Correct |
9 ms |
844 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
11 ms |
844 KB |
Output is correct |
7 |
Correct |
11 ms |
716 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
28 ms |
1088 KB |
Output is correct |
2 |
Correct |
25 ms |
1092 KB |
Output is correct |
3 |
Correct |
51 ms |
1828 KB |
Output is correct |
4 |
Correct |
34 ms |
3520 KB |
Output is correct |
5 |
Correct |
16 ms |
2020 KB |
Output is correct |
6 |
Correct |
31 ms |
3496 KB |
Output is correct |
7 |
Correct |
36 ms |
4136 KB |
Output is correct |
8 |
Correct |
22 ms |
2028 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
0 ms |
252 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
204 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 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 |
0 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
1 ms |
204 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 |
204 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 |
54 ms |
1772 KB |
Output is correct |
28 |
Correct |
56 ms |
3784 KB |
Output is correct |
29 |
Correct |
58 ms |
3752 KB |
Output is correct |
30 |
Correct |
56 ms |
3792 KB |
Output is correct |
31 |
Correct |
34 ms |
3528 KB |
Output is correct |
32 |
Correct |
13 ms |
716 KB |
Output is correct |
33 |
Correct |
13 ms |
716 KB |
Output is correct |
34 |
Correct |
13 ms |
660 KB |
Output is correct |
35 |
Correct |
9 ms |
844 KB |
Output is correct |
36 |
Correct |
0 ms |
204 KB |
Output is correct |
37 |
Correct |
11 ms |
844 KB |
Output is correct |
38 |
Correct |
11 ms |
716 KB |
Output is correct |
39 |
Correct |
28 ms |
1088 KB |
Output is correct |
40 |
Correct |
25 ms |
1092 KB |
Output is correct |
41 |
Correct |
51 ms |
1828 KB |
Output is correct |
42 |
Correct |
34 ms |
3520 KB |
Output is correct |
43 |
Correct |
16 ms |
2020 KB |
Output is correct |
44 |
Correct |
31 ms |
3496 KB |
Output is correct |
45 |
Correct |
36 ms |
4136 KB |
Output is correct |
46 |
Correct |
22 ms |
2028 KB |
Output is correct |
47 |
Correct |
28 ms |
1996 KB |
Output is correct |
48 |
Correct |
28 ms |
1988 KB |
Output is correct |
49 |
Correct |
55 ms |
3780 KB |
Output is correct |
50 |
Correct |
34 ms |
3532 KB |
Output is correct |
51 |
Correct |
29 ms |
2768 KB |
Output is correct |
52 |
Correct |
34 ms |
3652 KB |
Output is correct |
53 |
Correct |
29 ms |
3660 KB |
Output is correct |
54 |
Correct |
36 ms |
4300 KB |
Output is correct |
55 |
Correct |
46 ms |
3708 KB |
Output is correct |