#include <iostream>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
#include <cassert>
using namespace std;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
using i64 = long long;
#define N (1<<20)
int n, d, t[N];
vector<int> g[N];
array<int, 2> dp[N];
void upd(int p, int k) {;for (; p ; p-=p&-p) t[p] += k; }
int qry(int p) { ; int z = 0; for (; p < N; p+=p&-p) z += t[p]; return z; }
void dfs(int u, int p, int dep)
{
int base = 0;
for (auto v : g[u]) if (v != p) dfs(v, u, dep+1), base += dp[v][0] - 1;
vector<int> dm;
for (auto v : g[u]) if (v != p) upd(dp[v][1], 1), dm.push_back(dp[v][1]);
sort(ALL(dm));
dp[u] = {base + 1 + qry(d + dep), dep};
for (auto v : g[u]) if (v != p)
{
upd(dp[v][1], -1);
if (dp[v][1] < dep + (d+1)/2)
dp[u] = max(dp[u], {base + 1 + qry(dep + max((d+1)/2, d - (dp[v][1] - dep))), dp[v][1]});
else
{
int D = *lower_bound(ALL(dm), dep + (d+1)/2);
dp[u] = max(dp[u], {base + 1 + qry(dep + max((d+1)/2, d - (dp[v][1] - dep))), D});
}
upd(dp[v][1], 1);
}
for (auto v : g[u]) if (v != p) upd(dp[v][1], -1);
}
int main()
{
ShinLena;
cin >> n >> d;
for (int i = 1, v; i < n; ++i) cin >> v, g[i].push_back(v), g[v].push_back(i);
dfs(0, 0, 1);
cout << dp[0][0];
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
26972 KB |
Output is correct |
2 |
Correct |
6 ms |
26972 KB |
Output is correct |
3 |
Correct |
7 ms |
27088 KB |
Output is correct |
4 |
Correct |
5 ms |
26972 KB |
Output is correct |
5 |
Correct |
5 ms |
26972 KB |
Output is correct |
6 |
Correct |
5 ms |
26968 KB |
Output is correct |
7 |
Correct |
5 ms |
26972 KB |
Output is correct |
8 |
Correct |
6 ms |
26972 KB |
Output is correct |
9 |
Correct |
5 ms |
26972 KB |
Output is correct |
10 |
Correct |
5 ms |
26972 KB |
Output is correct |
11 |
Correct |
6 ms |
27088 KB |
Output is correct |
12 |
Correct |
5 ms |
26968 KB |
Output is correct |
13 |
Correct |
5 ms |
26972 KB |
Output is correct |
14 |
Correct |
6 ms |
27148 KB |
Output is correct |
15 |
Correct |
5 ms |
26972 KB |
Output is correct |
16 |
Correct |
5 ms |
26968 KB |
Output is correct |
17 |
Correct |
5 ms |
27140 KB |
Output is correct |
18 |
Correct |
5 ms |
26968 KB |
Output is correct |
19 |
Correct |
5 ms |
26972 KB |
Output is correct |
20 |
Correct |
5 ms |
26972 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
26972 KB |
Output is correct |
2 |
Correct |
6 ms |
26972 KB |
Output is correct |
3 |
Correct |
7 ms |
27088 KB |
Output is correct |
4 |
Correct |
5 ms |
26972 KB |
Output is correct |
5 |
Correct |
5 ms |
26972 KB |
Output is correct |
6 |
Correct |
5 ms |
26968 KB |
Output is correct |
7 |
Correct |
5 ms |
26972 KB |
Output is correct |
8 |
Correct |
6 ms |
26972 KB |
Output is correct |
9 |
Correct |
5 ms |
26972 KB |
Output is correct |
10 |
Correct |
5 ms |
26972 KB |
Output is correct |
11 |
Correct |
6 ms |
27088 KB |
Output is correct |
12 |
Correct |
5 ms |
26968 KB |
Output is correct |
13 |
Correct |
5 ms |
26972 KB |
Output is correct |
14 |
Correct |
6 ms |
27148 KB |
Output is correct |
15 |
Correct |
5 ms |
26972 KB |
Output is correct |
16 |
Correct |
5 ms |
26968 KB |
Output is correct |
17 |
Correct |
5 ms |
27140 KB |
Output is correct |
18 |
Correct |
5 ms |
26968 KB |
Output is correct |
19 |
Correct |
5 ms |
26972 KB |
Output is correct |
20 |
Correct |
5 ms |
26972 KB |
Output is correct |
21 |
Correct |
6 ms |
27484 KB |
Output is correct |
22 |
Correct |
5 ms |
27224 KB |
Output is correct |
23 |
Correct |
5 ms |
26968 KB |
Output is correct |
24 |
Correct |
6 ms |
26972 KB |
Output is correct |
25 |
Correct |
6 ms |
26972 KB |
Output is correct |
26 |
Correct |
6 ms |
26972 KB |
Output is correct |
27 |
Correct |
6 ms |
27076 KB |
Output is correct |
28 |
Correct |
6 ms |
26972 KB |
Output is correct |
29 |
Correct |
6 ms |
27088 KB |
Output is correct |
30 |
Correct |
6 ms |
26972 KB |
Output is correct |
31 |
Correct |
7 ms |
26968 KB |
Output is correct |
32 |
Correct |
6 ms |
26972 KB |
Output is correct |
33 |
Correct |
6 ms |
26972 KB |
Output is correct |
34 |
Correct |
7 ms |
26972 KB |
Output is correct |
35 |
Correct |
6 ms |
26968 KB |
Output is correct |
36 |
Correct |
6 ms |
26972 KB |
Output is correct |
37 |
Correct |
6 ms |
27228 KB |
Output is correct |
38 |
Correct |
6 ms |
27228 KB |
Output is correct |
39 |
Correct |
6 ms |
27228 KB |
Output is correct |
40 |
Correct |
6 ms |
27484 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
26972 KB |
Output is correct |
2 |
Correct |
6 ms |
26972 KB |
Output is correct |
3 |
Correct |
7 ms |
27088 KB |
Output is correct |
4 |
Correct |
5 ms |
26972 KB |
Output is correct |
5 |
Correct |
5 ms |
26972 KB |
Output is correct |
6 |
Correct |
5 ms |
26968 KB |
Output is correct |
7 |
Correct |
5 ms |
26972 KB |
Output is correct |
8 |
Correct |
6 ms |
26972 KB |
Output is correct |
9 |
Correct |
5 ms |
26972 KB |
Output is correct |
10 |
Correct |
5 ms |
26972 KB |
Output is correct |
11 |
Correct |
6 ms |
27088 KB |
Output is correct |
12 |
Correct |
5 ms |
26968 KB |
Output is correct |
13 |
Correct |
5 ms |
26972 KB |
Output is correct |
14 |
Correct |
6 ms |
27148 KB |
Output is correct |
15 |
Correct |
5 ms |
26972 KB |
Output is correct |
16 |
Correct |
5 ms |
26968 KB |
Output is correct |
17 |
Correct |
5 ms |
27140 KB |
Output is correct |
18 |
Correct |
5 ms |
26968 KB |
Output is correct |
19 |
Correct |
5 ms |
26972 KB |
Output is correct |
20 |
Correct |
5 ms |
26972 KB |
Output is correct |
21 |
Correct |
6 ms |
27484 KB |
Output is correct |
22 |
Correct |
5 ms |
27224 KB |
Output is correct |
23 |
Correct |
5 ms |
26968 KB |
Output is correct |
24 |
Correct |
6 ms |
26972 KB |
Output is correct |
25 |
Correct |
6 ms |
26972 KB |
Output is correct |
26 |
Correct |
6 ms |
26972 KB |
Output is correct |
27 |
Correct |
6 ms |
27076 KB |
Output is correct |
28 |
Correct |
6 ms |
26972 KB |
Output is correct |
29 |
Correct |
6 ms |
27088 KB |
Output is correct |
30 |
Correct |
6 ms |
26972 KB |
Output is correct |
31 |
Correct |
7 ms |
26968 KB |
Output is correct |
32 |
Correct |
6 ms |
26972 KB |
Output is correct |
33 |
Correct |
6 ms |
26972 KB |
Output is correct |
34 |
Correct |
7 ms |
26972 KB |
Output is correct |
35 |
Correct |
6 ms |
26968 KB |
Output is correct |
36 |
Correct |
6 ms |
26972 KB |
Output is correct |
37 |
Correct |
6 ms |
27228 KB |
Output is correct |
38 |
Correct |
6 ms |
27228 KB |
Output is correct |
39 |
Correct |
6 ms |
27228 KB |
Output is correct |
40 |
Correct |
6 ms |
27484 KB |
Output is correct |
41 |
Correct |
54 ms |
36988 KB |
Output is correct |
42 |
Correct |
35 ms |
33372 KB |
Output is correct |
43 |
Correct |
36 ms |
33124 KB |
Output is correct |
44 |
Correct |
37 ms |
33124 KB |
Output is correct |
45 |
Correct |
36 ms |
33120 KB |
Output is correct |
46 |
Correct |
65 ms |
36956 KB |
Output is correct |
47 |
Correct |
78 ms |
36900 KB |
Output is correct |
48 |
Correct |
104 ms |
36856 KB |
Output is correct |
49 |
Correct |
70 ms |
36952 KB |
Output is correct |
50 |
Correct |
24 ms |
33372 KB |
Output is correct |
51 |
Correct |
25 ms |
33372 KB |
Output is correct |
52 |
Correct |
24 ms |
33240 KB |
Output is correct |
53 |
Correct |
54 ms |
37336 KB |
Output is correct |
54 |
Correct |
49 ms |
37200 KB |
Output is correct |
55 |
Correct |
54 ms |
37256 KB |
Output is correct |
56 |
Correct |
6 ms |
27224 KB |
Output is correct |
57 |
Correct |
13 ms |
31836 KB |
Output is correct |
58 |
Correct |
41 ms |
50004 KB |
Output is correct |
59 |
Correct |
84 ms |
55636 KB |
Output is correct |
60 |
Correct |
52 ms |
37068 KB |
Output is correct |
61 |
Correct |
61 ms |
36480 KB |
Output is correct |