#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> p;
typedef pair<ll, p> tri;
typedef vector<ll> v;
typedef vector<v> vv;
typedef vector<p> vp;
typedef vector<tri> vtri;
typedef vector<vtri> vvtri;
typedef vector<vvtri> vvvtri;
typedef vector<vv> vvv;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<vvb> vvvb;
typedef vector<p> vp;
typedef vector<vp> vvp;
typedef vector<vvp> vvvp;
typedef vector<vvvp> vvvvp;
#define double long double
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<vvd> vvvd;
const ll mod = 1e9 + 7;
const ll INF = 1e18;
#define f first
#define s second
#define pb push_back
#define eb emplace_back
#define loop(a) for (ll i = 0; i < a; i++)
#define setmin(a, b) a = min(a, b)
#define setmax(a, b) a = max(a, b)
#define all(v) v.begin(), v.end()
void update(v &st, ll i, ll val)
{
ll n = st.size() / 2;
i += n;
st[i] = val;
i /= 2;
while (i > 0)
{
st[i] = min(st[2 * i], st[2 * i + 1]);
i /= 2;
}
}
ll query(v &st, ll l, ll r)
{
ll n= st.size() / 2;
l += n; r += n;
ll res = INF;
while (l <= r)
{
if (l % 2 == 1)
{
res = min(res, st[l]);
l++;
}
if (r % 2 == 0)
{
res = min(res, st[r]);
r--;
}
l /= 2; r /= 2;
}
return res;
}
ll lastSmaller(v &st, ll x)
{
ll i = 1;
ll n = st.size() / 2;
if (st[1] >= x) return -1;
while (i < n)
{
if (st[2 * i + 1] < x) i = 2 * i + 1;
else i *= 2;
}
return i - n;
}
int main()
{
ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
ll N, D;
cin >> N >> D;
v A(N);
for (ll i =0; i < N; i++) cin >> A[i];
multiset<ll> vals;
v mini(N, -1);
for (ll i = 0; i < N; i++)
{
vals.insert(A[i]);
if (i >= D) vals.erase(vals.find(A[i - D]));
mini[i] = *vals.begin();
}
v expire(N, -1);
multiset<p> curVals;
for (ll i = 0; i < N; i++)
{
curVals.emplace(A[i], i);
while ((*curVals.begin()).f < mini[i])
{
expire[(*curVals.begin()).s] = i;
curVals.erase(curVals.begin());
}
}
vv expiringIn(N);
for (ll i =0; i < N; i++) if (expire[i] != -1) expiringIn[expire[i]].pb(i);
ll n = pow(2, ceil(log2(N + 1)));
v st(2 * n, INF);
update(st, 0, -INF);
vector<multiset<ll>> endings(N + 1);
endings[0].insert(-INF);
for (ll i = 1; i <= N; i++) endings[i].insert(INF);
v res(N, -1);
ll best = 0;
for (ll i = 0; i < N; i++)
{
ll add = lastSmaller(st, A[i]);
if (add != -1)
{
endings[add + 1].insert(A[i]);
best = max(best, add + 1);
update(st, add + 1, *endings[add + 1].begin());
res[i] = add + 1;
}
for (ll x : expiringIn[i])
{
if (res[x] == -1) continue;
endings[res[x]].erase(endings[res[x]].find(A[x]));
update(st, res[x], *endings[res[x]].begin());
}
}
cout << best << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 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 |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 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 |
344 KB |
Output is correct |
24 |
Correct |
0 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 |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
344 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
352 KB |
Output is correct |
32 |
Correct |
1 ms |
352 KB |
Output is correct |
33 |
Correct |
1 ms |
352 KB |
Output is correct |
34 |
Correct |
1 ms |
360 KB |
Output is correct |
35 |
Correct |
1 ms |
352 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
1 ms |
356 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
1 ms |
356 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 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 |
344 KB |
Output is correct |
24 |
Correct |
0 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 |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
344 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
352 KB |
Output is correct |
32 |
Correct |
1 ms |
352 KB |
Output is correct |
33 |
Correct |
1 ms |
352 KB |
Output is correct |
34 |
Correct |
1 ms |
360 KB |
Output is correct |
35 |
Correct |
1 ms |
352 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
1 ms |
356 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
1 ms |
356 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
41 |
Correct |
3 ms |
1636 KB |
Output is correct |
42 |
Correct |
3 ms |
1628 KB |
Output is correct |
43 |
Correct |
4 ms |
1892 KB |
Output is correct |
44 |
Correct |
4 ms |
1884 KB |
Output is correct |
45 |
Correct |
5 ms |
2256 KB |
Output is correct |
46 |
Correct |
5 ms |
2652 KB |
Output is correct |
47 |
Correct |
3 ms |
1636 KB |
Output is correct |
48 |
Correct |
4 ms |
1952 KB |
Output is correct |
49 |
Correct |
5 ms |
1884 KB |
Output is correct |
50 |
Correct |
4 ms |
1884 KB |
Output is correct |
51 |
Correct |
3 ms |
1628 KB |
Output is correct |
52 |
Correct |
3 ms |
1628 KB |
Output is correct |
53 |
Correct |
3 ms |
1628 KB |
Output is correct |
54 |
Correct |
4 ms |
1628 KB |
Output is correct |
55 |
Correct |
6 ms |
2184 KB |
Output is correct |
56 |
Correct |
6 ms |
2396 KB |
Output is correct |
57 |
Correct |
4 ms |
2396 KB |
Output is correct |
58 |
Correct |
5 ms |
2812 KB |
Output is correct |
59 |
Correct |
5 ms |
2648 KB |
Output is correct |
60 |
Correct |
3 ms |
2208 KB |
Output is correct |
61 |
Correct |
3 ms |
2396 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
195 ms |
88568 KB |
Output is correct |
2 |
Correct |
174 ms |
64852 KB |
Output is correct |
3 |
Correct |
159 ms |
61524 KB |
Output is correct |
4 |
Correct |
145 ms |
61780 KB |
Output is correct |
5 |
Correct |
144 ms |
62544 KB |
Output is correct |
6 |
Correct |
155 ms |
61812 KB |
Output is correct |
7 |
Correct |
128 ms |
65104 KB |
Output is correct |
8 |
Correct |
200 ms |
88692 KB |
Output is correct |
9 |
Correct |
129 ms |
62944 KB |
Output is correct |
10 |
Correct |
181 ms |
75860 KB |
Output is correct |
11 |
Correct |
161 ms |
61776 KB |
Output is correct |
12 |
Correct |
149 ms |
61780 KB |
Output is correct |
13 |
Correct |
130 ms |
65360 KB |
Output is correct |
14 |
Correct |
147 ms |
58712 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
248 ms |
102996 KB |
Output is correct |
2 |
Correct |
326 ms |
102780 KB |
Output is correct |
3 |
Correct |
428 ms |
102560 KB |
Output is correct |
4 |
Correct |
372 ms |
102752 KB |
Output is correct |
5 |
Correct |
318 ms |
102672 KB |
Output is correct |
6 |
Correct |
362 ms |
102736 KB |
Output is correct |
7 |
Correct |
212 ms |
102676 KB |
Output is correct |
8 |
Correct |
268 ms |
102632 KB |
Output is correct |
9 |
Correct |
176 ms |
101968 KB |
Output is correct |
10 |
Correct |
279 ms |
102452 KB |
Output is correct |
11 |
Correct |
384 ms |
102740 KB |
Output is correct |
12 |
Correct |
262 ms |
102604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 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 |
344 KB |
Output is correct |
24 |
Correct |
0 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 |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
344 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
352 KB |
Output is correct |
32 |
Correct |
1 ms |
352 KB |
Output is correct |
33 |
Correct |
1 ms |
352 KB |
Output is correct |
34 |
Correct |
1 ms |
360 KB |
Output is correct |
35 |
Correct |
1 ms |
352 KB |
Output is correct |
36 |
Correct |
1 ms |
348 KB |
Output is correct |
37 |
Correct |
1 ms |
356 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
1 ms |
356 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
41 |
Correct |
3 ms |
1636 KB |
Output is correct |
42 |
Correct |
3 ms |
1628 KB |
Output is correct |
43 |
Correct |
4 ms |
1892 KB |
Output is correct |
44 |
Correct |
4 ms |
1884 KB |
Output is correct |
45 |
Correct |
5 ms |
2256 KB |
Output is correct |
46 |
Correct |
5 ms |
2652 KB |
Output is correct |
47 |
Correct |
3 ms |
1636 KB |
Output is correct |
48 |
Correct |
4 ms |
1952 KB |
Output is correct |
49 |
Correct |
5 ms |
1884 KB |
Output is correct |
50 |
Correct |
4 ms |
1884 KB |
Output is correct |
51 |
Correct |
3 ms |
1628 KB |
Output is correct |
52 |
Correct |
3 ms |
1628 KB |
Output is correct |
53 |
Correct |
3 ms |
1628 KB |
Output is correct |
54 |
Correct |
4 ms |
1628 KB |
Output is correct |
55 |
Correct |
6 ms |
2184 KB |
Output is correct |
56 |
Correct |
6 ms |
2396 KB |
Output is correct |
57 |
Correct |
4 ms |
2396 KB |
Output is correct |
58 |
Correct |
5 ms |
2812 KB |
Output is correct |
59 |
Correct |
5 ms |
2648 KB |
Output is correct |
60 |
Correct |
3 ms |
2208 KB |
Output is correct |
61 |
Correct |
3 ms |
2396 KB |
Output is correct |
62 |
Correct |
195 ms |
88568 KB |
Output is correct |
63 |
Correct |
174 ms |
64852 KB |
Output is correct |
64 |
Correct |
159 ms |
61524 KB |
Output is correct |
65 |
Correct |
145 ms |
61780 KB |
Output is correct |
66 |
Correct |
144 ms |
62544 KB |
Output is correct |
67 |
Correct |
155 ms |
61812 KB |
Output is correct |
68 |
Correct |
128 ms |
65104 KB |
Output is correct |
69 |
Correct |
200 ms |
88692 KB |
Output is correct |
70 |
Correct |
129 ms |
62944 KB |
Output is correct |
71 |
Correct |
181 ms |
75860 KB |
Output is correct |
72 |
Correct |
161 ms |
61776 KB |
Output is correct |
73 |
Correct |
149 ms |
61780 KB |
Output is correct |
74 |
Correct |
130 ms |
65360 KB |
Output is correct |
75 |
Correct |
147 ms |
58712 KB |
Output is correct |
76 |
Correct |
248 ms |
102996 KB |
Output is correct |
77 |
Correct |
326 ms |
102780 KB |
Output is correct |
78 |
Correct |
428 ms |
102560 KB |
Output is correct |
79 |
Correct |
372 ms |
102752 KB |
Output is correct |
80 |
Correct |
318 ms |
102672 KB |
Output is correct |
81 |
Correct |
362 ms |
102736 KB |
Output is correct |
82 |
Correct |
212 ms |
102676 KB |
Output is correct |
83 |
Correct |
268 ms |
102632 KB |
Output is correct |
84 |
Correct |
176 ms |
101968 KB |
Output is correct |
85 |
Correct |
279 ms |
102452 KB |
Output is correct |
86 |
Correct |
384 ms |
102740 KB |
Output is correct |
87 |
Correct |
262 ms |
102604 KB |
Output is correct |
88 |
Correct |
166 ms |
61012 KB |
Output is correct |
89 |
Correct |
185 ms |
61012 KB |
Output is correct |
90 |
Correct |
238 ms |
67552 KB |
Output is correct |
91 |
Correct |
321 ms |
85604 KB |
Output is correct |
92 |
Correct |
273 ms |
88988 KB |
Output is correct |
93 |
Correct |
390 ms |
89472 KB |
Output is correct |
94 |
Correct |
413 ms |
98900 KB |
Output is correct |
95 |
Correct |
162 ms |
61420 KB |
Output is correct |
96 |
Correct |
217 ms |
63348 KB |
Output is correct |
97 |
Correct |
262 ms |
65400 KB |
Output is correct |
98 |
Correct |
286 ms |
85332 KB |
Output is correct |
99 |
Correct |
332 ms |
88652 KB |
Output is correct |
100 |
Correct |
316 ms |
88660 KB |
Output is correct |
101 |
Correct |
145 ms |
61524 KB |
Output is correct |
102 |
Correct |
173 ms |
59812 KB |
Output is correct |
103 |
Correct |
191 ms |
59476 KB |
Output is correct |
104 |
Correct |
231 ms |
60248 KB |
Output is correct |
105 |
Correct |
335 ms |
67992 KB |
Output is correct |
106 |
Correct |
234 ms |
87652 KB |
Output is correct |
107 |
Correct |
288 ms |
88912 KB |
Output is correct |
108 |
Correct |
333 ms |
89172 KB |
Output is correct |
109 |
Correct |
137 ms |
65616 KB |
Output is correct |
110 |
Correct |
250 ms |
79580 KB |
Output is correct |
111 |
Correct |
295 ms |
84560 KB |
Output is correct |
112 |
Correct |
186 ms |
84952 KB |
Output is correct |
113 |
Correct |
332 ms |
89176 KB |
Output is correct |
114 |
Correct |
300 ms |
89172 KB |
Output is correct |
115 |
Correct |
259 ms |
102980 KB |
Output is correct |
116 |
Correct |
250 ms |
102992 KB |
Output is correct |
117 |
Correct |
238 ms |
95984 KB |
Output is correct |
118 |
Correct |
227 ms |
96032 KB |
Output is correct |
119 |
Correct |
147 ms |
88656 KB |
Output is correct |
120 |
Correct |
152 ms |
88940 KB |
Output is correct |