#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 400860
int n, d, h[N], t[N];
vector<int> g[N];
array<int, 2> dp[N];
void upd(int p, int k) { p += 100;for (; p ; p-=p&-p) t[p] += k; }
int qry(int p) { p += 100; 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, safe = (d+1)/2, sel;
for (auto v : g[u]) if (v != p) dfs(v, u, dep+1), base += dp[v][0] - 1;
for (auto v : g[u]) if (v != p) upd(dp[v][1], 1);
dp[u] = max(dp[u], {base + 1 + qry(d + dep), dep});
for (auto v : g[u]) if (v != p)
{
int delta = dp[v][1] - dep, subdep = dp[v][1];
upd(dp[v][1], -1);
sel = base + 1 + qry(dep + max(safe, d - delta));
upd(dp[v][1], 1);
dp[u] = max(dp[u], {sel, subdep});
}
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 |
3 ms |
12632 KB |
Output is correct |
2 |
Correct |
4 ms |
12636 KB |
Output is correct |
3 |
Correct |
3 ms |
12632 KB |
Output is correct |
4 |
Correct |
2 ms |
12636 KB |
Output is correct |
5 |
Correct |
3 ms |
12636 KB |
Output is correct |
6 |
Correct |
2 ms |
12632 KB |
Output is correct |
7 |
Correct |
5 ms |
12636 KB |
Output is correct |
8 |
Correct |
3 ms |
12888 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
12636 KB |
Output is correct |
11 |
Correct |
3 ms |
12636 KB |
Output is correct |
12 |
Correct |
4 ms |
12636 KB |
Output is correct |
13 |
Correct |
4 ms |
12636 KB |
Output is correct |
14 |
Correct |
4 ms |
12632 KB |
Output is correct |
15 |
Correct |
4 ms |
12636 KB |
Output is correct |
16 |
Correct |
3 ms |
13028 KB |
Output is correct |
17 |
Correct |
3 ms |
12636 KB |
Output is correct |
18 |
Correct |
4 ms |
12888 KB |
Output is correct |
19 |
Correct |
3 ms |
12636 KB |
Output is correct |
20 |
Correct |
3 ms |
12636 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12632 KB |
Output is correct |
2 |
Correct |
4 ms |
12636 KB |
Output is correct |
3 |
Correct |
3 ms |
12632 KB |
Output is correct |
4 |
Correct |
2 ms |
12636 KB |
Output is correct |
5 |
Correct |
3 ms |
12636 KB |
Output is correct |
6 |
Correct |
2 ms |
12632 KB |
Output is correct |
7 |
Correct |
5 ms |
12636 KB |
Output is correct |
8 |
Correct |
3 ms |
12888 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
12636 KB |
Output is correct |
11 |
Correct |
3 ms |
12636 KB |
Output is correct |
12 |
Correct |
4 ms |
12636 KB |
Output is correct |
13 |
Correct |
4 ms |
12636 KB |
Output is correct |
14 |
Correct |
4 ms |
12632 KB |
Output is correct |
15 |
Correct |
4 ms |
12636 KB |
Output is correct |
16 |
Correct |
3 ms |
13028 KB |
Output is correct |
17 |
Correct |
3 ms |
12636 KB |
Output is correct |
18 |
Correct |
4 ms |
12888 KB |
Output is correct |
19 |
Correct |
3 ms |
12636 KB |
Output is correct |
20 |
Correct |
3 ms |
12636 KB |
Output is correct |
21 |
Correct |
3 ms |
13012 KB |
Output is correct |
22 |
Correct |
3 ms |
12636 KB |
Output is correct |
23 |
Correct |
3 ms |
12636 KB |
Output is correct |
24 |
Correct |
3 ms |
12796 KB |
Output is correct |
25 |
Correct |
4 ms |
12636 KB |
Output is correct |
26 |
Correct |
4 ms |
12636 KB |
Output is correct |
27 |
Correct |
3 ms |
12812 KB |
Output is correct |
28 |
Correct |
3 ms |
12636 KB |
Output is correct |
29 |
Correct |
3 ms |
12636 KB |
Output is correct |
30 |
Correct |
3 ms |
12632 KB |
Output is correct |
31 |
Correct |
3 ms |
12636 KB |
Output is correct |
32 |
Correct |
4 ms |
12636 KB |
Output is correct |
33 |
Correct |
4 ms |
12892 KB |
Output is correct |
34 |
Correct |
3 ms |
12848 KB |
Output is correct |
35 |
Correct |
3 ms |
12636 KB |
Output is correct |
36 |
Correct |
3 ms |
12848 KB |
Output is correct |
37 |
Correct |
3 ms |
12712 KB |
Output is correct |
38 |
Correct |
4 ms |
12888 KB |
Output is correct |
39 |
Correct |
4 ms |
12892 KB |
Output is correct |
40 |
Correct |
3 ms |
12892 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
12632 KB |
Output is correct |
2 |
Correct |
4 ms |
12636 KB |
Output is correct |
3 |
Correct |
3 ms |
12632 KB |
Output is correct |
4 |
Correct |
2 ms |
12636 KB |
Output is correct |
5 |
Correct |
3 ms |
12636 KB |
Output is correct |
6 |
Correct |
2 ms |
12632 KB |
Output is correct |
7 |
Correct |
5 ms |
12636 KB |
Output is correct |
8 |
Correct |
3 ms |
12888 KB |
Output is correct |
9 |
Correct |
2 ms |
12636 KB |
Output is correct |
10 |
Correct |
3 ms |
12636 KB |
Output is correct |
11 |
Correct |
3 ms |
12636 KB |
Output is correct |
12 |
Correct |
4 ms |
12636 KB |
Output is correct |
13 |
Correct |
4 ms |
12636 KB |
Output is correct |
14 |
Correct |
4 ms |
12632 KB |
Output is correct |
15 |
Correct |
4 ms |
12636 KB |
Output is correct |
16 |
Correct |
3 ms |
13028 KB |
Output is correct |
17 |
Correct |
3 ms |
12636 KB |
Output is correct |
18 |
Correct |
4 ms |
12888 KB |
Output is correct |
19 |
Correct |
3 ms |
12636 KB |
Output is correct |
20 |
Correct |
3 ms |
12636 KB |
Output is correct |
21 |
Correct |
3 ms |
13012 KB |
Output is correct |
22 |
Correct |
3 ms |
12636 KB |
Output is correct |
23 |
Correct |
3 ms |
12636 KB |
Output is correct |
24 |
Correct |
3 ms |
12796 KB |
Output is correct |
25 |
Correct |
4 ms |
12636 KB |
Output is correct |
26 |
Correct |
4 ms |
12636 KB |
Output is correct |
27 |
Correct |
3 ms |
12812 KB |
Output is correct |
28 |
Correct |
3 ms |
12636 KB |
Output is correct |
29 |
Correct |
3 ms |
12636 KB |
Output is correct |
30 |
Correct |
3 ms |
12632 KB |
Output is correct |
31 |
Correct |
3 ms |
12636 KB |
Output is correct |
32 |
Correct |
4 ms |
12636 KB |
Output is correct |
33 |
Correct |
4 ms |
12892 KB |
Output is correct |
34 |
Correct |
3 ms |
12848 KB |
Output is correct |
35 |
Correct |
3 ms |
12636 KB |
Output is correct |
36 |
Correct |
3 ms |
12848 KB |
Output is correct |
37 |
Correct |
3 ms |
12712 KB |
Output is correct |
38 |
Correct |
4 ms |
12888 KB |
Output is correct |
39 |
Correct |
4 ms |
12892 KB |
Output is correct |
40 |
Correct |
3 ms |
12892 KB |
Output is correct |
41 |
Correct |
74 ms |
20188 KB |
Output is correct |
42 |
Correct |
40 ms |
16780 KB |
Output is correct |
43 |
Incorrect |
43 ms |
16724 KB |
Output isn't correct |
44 |
Halted |
0 ms |
0 KB |
- |