#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
using namespace std;
const int mxn=2e5+5;
const int inf=1e9;
int d;
int level[mxn];
set<pii> st;
vector<int> adj[mxn];
void dfs(int cur,int prev,int dist,int x) {
if(dist >= d) return;
if(st.find({level[cur],cur}) != st.end()) st.erase({level[cur],cur});
for(int u : adj[cur]) {
if(u == prev || (cur == x && level[u] > level[cur]) ) continue;
dfs(u,cur,dist + 1,x);
}
}
void DFS(int cur,int prev) {
level[cur] = level[prev] + 1;
for(int u : adj[cur]) {
if(u != prev) DFS(u,cur);
}
}
int main() {
int n;
cin>>n;
cin>>d;
for(int i = 1; i < n; i++) {
int u;
cin>>u;
adj[u].push_back(i);
adj[i].push_back(u);
}
level[0] = 0;
DFS(0,0);
for(int i = 0; i < n; i++) st.insert({level[i],i});
int res = 0;
while(!st.empty()) {
auto it = st.rbegin();
int u = it->second;
res++;
dfs(u,-1,0,u);
}
cout<<res<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
4972 KB |
Output is correct |
2 |
Correct |
4 ms |
4972 KB |
Output is correct |
3 |
Correct |
3 ms |
4992 KB |
Output is correct |
4 |
Correct |
3 ms |
4972 KB |
Output is correct |
5 |
Correct |
4 ms |
4972 KB |
Output is correct |
6 |
Correct |
3 ms |
4972 KB |
Output is correct |
7 |
Correct |
4 ms |
4972 KB |
Output is correct |
8 |
Correct |
3 ms |
4972 KB |
Output is correct |
9 |
Correct |
4 ms |
5116 KB |
Output is correct |
10 |
Correct |
4 ms |
4972 KB |
Output is correct |
11 |
Correct |
3 ms |
4972 KB |
Output is correct |
12 |
Correct |
3 ms |
4972 KB |
Output is correct |
13 |
Correct |
3 ms |
4972 KB |
Output is correct |
14 |
Correct |
3 ms |
4972 KB |
Output is correct |
15 |
Correct |
4 ms |
4972 KB |
Output is correct |
16 |
Correct |
4 ms |
4972 KB |
Output is correct |
17 |
Correct |
3 ms |
4972 KB |
Output is correct |
18 |
Correct |
3 ms |
4972 KB |
Output is correct |
19 |
Correct |
5 ms |
4972 KB |
Output is correct |
20 |
Correct |
4 ms |
4972 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
4972 KB |
Output is correct |
2 |
Correct |
4 ms |
4972 KB |
Output is correct |
3 |
Correct |
3 ms |
4992 KB |
Output is correct |
4 |
Correct |
3 ms |
4972 KB |
Output is correct |
5 |
Correct |
4 ms |
4972 KB |
Output is correct |
6 |
Correct |
3 ms |
4972 KB |
Output is correct |
7 |
Correct |
4 ms |
4972 KB |
Output is correct |
8 |
Correct |
3 ms |
4972 KB |
Output is correct |
9 |
Correct |
4 ms |
5116 KB |
Output is correct |
10 |
Correct |
4 ms |
4972 KB |
Output is correct |
11 |
Correct |
3 ms |
4972 KB |
Output is correct |
12 |
Correct |
3 ms |
4972 KB |
Output is correct |
13 |
Correct |
3 ms |
4972 KB |
Output is correct |
14 |
Correct |
3 ms |
4972 KB |
Output is correct |
15 |
Correct |
4 ms |
4972 KB |
Output is correct |
16 |
Correct |
4 ms |
4972 KB |
Output is correct |
17 |
Correct |
3 ms |
4972 KB |
Output is correct |
18 |
Correct |
3 ms |
4972 KB |
Output is correct |
19 |
Correct |
5 ms |
4972 KB |
Output is correct |
20 |
Correct |
4 ms |
4972 KB |
Output is correct |
21 |
Correct |
5 ms |
5228 KB |
Output is correct |
22 |
Correct |
4 ms |
5100 KB |
Output is correct |
23 |
Correct |
5 ms |
5100 KB |
Output is correct |
24 |
Correct |
4 ms |
5100 KB |
Output is correct |
25 |
Correct |
4 ms |
5100 KB |
Output is correct |
26 |
Correct |
5 ms |
5100 KB |
Output is correct |
27 |
Correct |
5 ms |
5100 KB |
Output is correct |
28 |
Correct |
5 ms |
5120 KB |
Output is correct |
29 |
Correct |
5 ms |
5100 KB |
Output is correct |
30 |
Correct |
5 ms |
5100 KB |
Output is correct |
31 |
Correct |
5 ms |
5100 KB |
Output is correct |
32 |
Correct |
4 ms |
5100 KB |
Output is correct |
33 |
Correct |
6 ms |
5100 KB |
Output is correct |
34 |
Correct |
5 ms |
5100 KB |
Output is correct |
35 |
Correct |
5 ms |
5100 KB |
Output is correct |
36 |
Correct |
5 ms |
5100 KB |
Output is correct |
37 |
Correct |
5 ms |
5100 KB |
Output is correct |
38 |
Correct |
6 ms |
5100 KB |
Output is correct |
39 |
Correct |
5 ms |
5100 KB |
Output is correct |
40 |
Correct |
5 ms |
5228 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
4972 KB |
Output is correct |
2 |
Correct |
4 ms |
4972 KB |
Output is correct |
3 |
Correct |
3 ms |
4992 KB |
Output is correct |
4 |
Correct |
3 ms |
4972 KB |
Output is correct |
5 |
Correct |
4 ms |
4972 KB |
Output is correct |
6 |
Correct |
3 ms |
4972 KB |
Output is correct |
7 |
Correct |
4 ms |
4972 KB |
Output is correct |
8 |
Correct |
3 ms |
4972 KB |
Output is correct |
9 |
Correct |
4 ms |
5116 KB |
Output is correct |
10 |
Correct |
4 ms |
4972 KB |
Output is correct |
11 |
Correct |
3 ms |
4972 KB |
Output is correct |
12 |
Correct |
3 ms |
4972 KB |
Output is correct |
13 |
Correct |
3 ms |
4972 KB |
Output is correct |
14 |
Correct |
3 ms |
4972 KB |
Output is correct |
15 |
Correct |
4 ms |
4972 KB |
Output is correct |
16 |
Correct |
4 ms |
4972 KB |
Output is correct |
17 |
Correct |
3 ms |
4972 KB |
Output is correct |
18 |
Correct |
3 ms |
4972 KB |
Output is correct |
19 |
Correct |
5 ms |
4972 KB |
Output is correct |
20 |
Correct |
4 ms |
4972 KB |
Output is correct |
21 |
Correct |
5 ms |
5228 KB |
Output is correct |
22 |
Correct |
4 ms |
5100 KB |
Output is correct |
23 |
Correct |
5 ms |
5100 KB |
Output is correct |
24 |
Correct |
4 ms |
5100 KB |
Output is correct |
25 |
Correct |
4 ms |
5100 KB |
Output is correct |
26 |
Correct |
5 ms |
5100 KB |
Output is correct |
27 |
Correct |
5 ms |
5100 KB |
Output is correct |
28 |
Correct |
5 ms |
5120 KB |
Output is correct |
29 |
Correct |
5 ms |
5100 KB |
Output is correct |
30 |
Correct |
5 ms |
5100 KB |
Output is correct |
31 |
Correct |
5 ms |
5100 KB |
Output is correct |
32 |
Correct |
4 ms |
5100 KB |
Output is correct |
33 |
Correct |
6 ms |
5100 KB |
Output is correct |
34 |
Correct |
5 ms |
5100 KB |
Output is correct |
35 |
Correct |
5 ms |
5100 KB |
Output is correct |
36 |
Correct |
5 ms |
5100 KB |
Output is correct |
37 |
Correct |
5 ms |
5100 KB |
Output is correct |
38 |
Correct |
6 ms |
5100 KB |
Output is correct |
39 |
Correct |
5 ms |
5100 KB |
Output is correct |
40 |
Correct |
5 ms |
5228 KB |
Output is correct |
41 |
Execution timed out |
1081 ms |
20840 KB |
Time limit exceeded |
42 |
Halted |
0 ms |
0 KB |
- |