#include <bits/stdc++.h>
using namespace std;
// ordered set whith s.order_of_key(x) method, which returns rank of element x in set s
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
*/
// pair printing
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "(" << par.first << "; " << par.second << ")"; return out;}
// set printing
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for(const auto &x:cont) out << x << ", "; out << "}"; return out; }
// map printing
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for(const auto &x:cont) out << x << ", "; out << "}"; return out; }
// unordered_set printing
template <class T>
ostream& operator<<(ostream& out, const unordered_set<T> &cont) {out << "{";for(const auto &x:cont) out << x << ", ";out << "}";return out;}
// unordered_map printing
template <class T, class U>
ostream& operator<<(ostream& out, const unordered_map<T, U> &cont) {out << "{";for(const auto &x:cont) out << x << ", ";out << "}";return out;}
// vector printing
template<class T>
ostream& operator<<(ostream& out, const vector<T> &cont){ out << "["; for (const auto &x:cont) out << x << ", "; out << "]"; return out;}
#define print(x) cout << (x) << endl;
#define dmp(x) cerr << #x << " = " << x << endl
#define dmpn(x) cerr << #x << " = " << x << "; "
#define dmpl(x) cerr << "Line " << __LINE__ << ": " << #x << " = " << x << endl
using ll = long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
#define pb push_back
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()
#define contains(s,x) ((s).find(x) != (s).end())
const int MOD = 998244353;
void solve() {
int N, D;
cin >> N >> D;
vector<int> a(N);
for (int i = 0; i < N; i++) cin >> a[i];
vector<int> dp(N + 1, INT_MAX), ending_length(N + 1, 0);
dp[0] = 0;
for (int i = 0; i < N; i++) {
int j = lower_bound(all(dp), a[i]) - begin(dp);
if (dp[j] > a[i]) dp[j] = a[i];
ending_length[i + 1] = j;
}
dp.assign(N + 1, -INT_MAX);
int ans = 1;
for (int i = N - 1; i >= 0; i--) {
auto it = upper_bound(all(dp), a[i] - D);
int k = (it == end(dp)) ? 0 : N - (it - begin(dp)) + 1;
// dmpn(ending_length[i + 1]); dmp(k);
int cans = ending_length[i + 1] + k;
ans = max(cans, ans);
int j = upper_bound(all(dp), a[i]) - begin(dp);
if (dp[j - 1] < a[i]) dp[j - 1] = a[i];
// dmp(dp);
}
cout << ans << endl;
}
int32_t main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t = 1;
// cin >> t;
while (t--) {
solve();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
600 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
600 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
50 ms |
2652 KB |
Output is correct |
2 |
Correct |
49 ms |
2652 KB |
Output is correct |
3 |
Correct |
47 ms |
2652 KB |
Output is correct |
4 |
Correct |
49 ms |
2800 KB |
Output is correct |
5 |
Correct |
35 ms |
2648 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
11 ms |
856 KB |
Output is correct |
2 |
Correct |
12 ms |
860 KB |
Output is correct |
3 |
Correct |
11 ms |
856 KB |
Output is correct |
4 |
Correct |
9 ms |
1116 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
9 ms |
860 KB |
Output is correct |
7 |
Correct |
9 ms |
1052 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
1628 KB |
Output is correct |
2 |
Correct |
20 ms |
1628 KB |
Output is correct |
3 |
Correct |
42 ms |
2796 KB |
Output is correct |
4 |
Correct |
34 ms |
2648 KB |
Output is correct |
5 |
Correct |
18 ms |
1624 KB |
Output is correct |
6 |
Correct |
29 ms |
2492 KB |
Output is correct |
7 |
Correct |
32 ms |
2652 KB |
Output is correct |
8 |
Correct |
17 ms |
1628 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
600 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
50 ms |
2652 KB |
Output is correct |
28 |
Correct |
49 ms |
2652 KB |
Output is correct |
29 |
Correct |
47 ms |
2652 KB |
Output is correct |
30 |
Correct |
49 ms |
2800 KB |
Output is correct |
31 |
Correct |
35 ms |
2648 KB |
Output is correct |
32 |
Correct |
11 ms |
856 KB |
Output is correct |
33 |
Correct |
12 ms |
860 KB |
Output is correct |
34 |
Correct |
11 ms |
856 KB |
Output is correct |
35 |
Correct |
9 ms |
1116 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
9 ms |
860 KB |
Output is correct |
38 |
Correct |
9 ms |
1052 KB |
Output is correct |
39 |
Correct |
20 ms |
1628 KB |
Output is correct |
40 |
Correct |
20 ms |
1628 KB |
Output is correct |
41 |
Correct |
42 ms |
2796 KB |
Output is correct |
42 |
Correct |
34 ms |
2648 KB |
Output is correct |
43 |
Correct |
18 ms |
1624 KB |
Output is correct |
44 |
Correct |
29 ms |
2492 KB |
Output is correct |
45 |
Correct |
32 ms |
2652 KB |
Output is correct |
46 |
Correct |
17 ms |
1628 KB |
Output is correct |
47 |
Correct |
23 ms |
2396 KB |
Output is correct |
48 |
Correct |
26 ms |
2604 KB |
Output is correct |
49 |
Correct |
48 ms |
4684 KB |
Output is correct |
50 |
Correct |
34 ms |
3964 KB |
Output is correct |
51 |
Correct |
29 ms |
2960 KB |
Output is correct |
52 |
Correct |
42 ms |
3928 KB |
Output is correct |
53 |
Correct |
31 ms |
3924 KB |
Output is correct |
54 |
Correct |
33 ms |
4688 KB |
Output is correct |
55 |
Correct |
39 ms |
4696 KB |
Output is correct |