#include <bits/extc++.h>
using namespace std;
typedef long long ll;
#define int ll
int n,d;
vector<int> roads[200005];
int dp[200005],mini[200005];
void dfs(int x){
vector<int> v;
for(int i:roads[x]){
dfs(i);
dp[x] += dp[i];
v.push_back(mini[i]);
}
if(v.size()==0){
dp[x]++;
}
else{
sort(v.begin(),v.end(),greater<int>());
while(v.size()>=2){
int a = v.back();
v.pop_back();
if(a+v.back()+2LL<d){
dp[x]--;
continue;
}
else{
v.push_back(a);
break;
}
}
if(v.back()+1LL<d){
mini[x] = v.back()+1LL;
}
else{
dp[x]++;
}
}
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> d;
for(int i=1;i<=n-1;i++){
int a;
cin >> a;
roads[a].push_back(i);
}
dfs(0);
cout << dp[0] << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
4948 KB |
Output is correct |
3 |
Correct |
2 ms |
4948 KB |
Output is correct |
4 |
Correct |
3 ms |
4948 KB |
Output is correct |
5 |
Correct |
3 ms |
5024 KB |
Output is correct |
6 |
Correct |
3 ms |
4948 KB |
Output is correct |
7 |
Correct |
3 ms |
5028 KB |
Output is correct |
8 |
Correct |
3 ms |
5020 KB |
Output is correct |
9 |
Correct |
3 ms |
4948 KB |
Output is correct |
10 |
Correct |
3 ms |
5024 KB |
Output is correct |
11 |
Correct |
3 ms |
4948 KB |
Output is correct |
12 |
Correct |
3 ms |
4948 KB |
Output is correct |
13 |
Correct |
3 ms |
4948 KB |
Output is correct |
14 |
Correct |
3 ms |
4948 KB |
Output is correct |
15 |
Correct |
3 ms |
5024 KB |
Output is correct |
16 |
Correct |
3 ms |
5024 KB |
Output is correct |
17 |
Correct |
3 ms |
4948 KB |
Output is correct |
18 |
Correct |
3 ms |
5024 KB |
Output is correct |
19 |
Correct |
3 ms |
4948 KB |
Output is correct |
20 |
Correct |
3 ms |
4948 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
4948 KB |
Output is correct |
3 |
Correct |
2 ms |
4948 KB |
Output is correct |
4 |
Correct |
3 ms |
4948 KB |
Output is correct |
5 |
Correct |
3 ms |
5024 KB |
Output is correct |
6 |
Correct |
3 ms |
4948 KB |
Output is correct |
7 |
Correct |
3 ms |
5028 KB |
Output is correct |
8 |
Correct |
3 ms |
5020 KB |
Output is correct |
9 |
Correct |
3 ms |
4948 KB |
Output is correct |
10 |
Correct |
3 ms |
5024 KB |
Output is correct |
11 |
Correct |
3 ms |
4948 KB |
Output is correct |
12 |
Correct |
3 ms |
4948 KB |
Output is correct |
13 |
Correct |
3 ms |
4948 KB |
Output is correct |
14 |
Correct |
3 ms |
4948 KB |
Output is correct |
15 |
Correct |
3 ms |
5024 KB |
Output is correct |
16 |
Correct |
3 ms |
5024 KB |
Output is correct |
17 |
Correct |
3 ms |
4948 KB |
Output is correct |
18 |
Correct |
3 ms |
5024 KB |
Output is correct |
19 |
Correct |
3 ms |
4948 KB |
Output is correct |
20 |
Correct |
3 ms |
4948 KB |
Output is correct |
21 |
Correct |
3 ms |
5204 KB |
Output is correct |
22 |
Correct |
3 ms |
4948 KB |
Output is correct |
23 |
Correct |
3 ms |
5020 KB |
Output is correct |
24 |
Correct |
3 ms |
4948 KB |
Output is correct |
25 |
Correct |
3 ms |
4948 KB |
Output is correct |
26 |
Correct |
4 ms |
5028 KB |
Output is correct |
27 |
Correct |
3 ms |
4948 KB |
Output is correct |
28 |
Correct |
3 ms |
5076 KB |
Output is correct |
29 |
Correct |
3 ms |
5076 KB |
Output is correct |
30 |
Correct |
4 ms |
5076 KB |
Output is correct |
31 |
Correct |
3 ms |
5076 KB |
Output is correct |
32 |
Correct |
3 ms |
5076 KB |
Output is correct |
33 |
Correct |
3 ms |
5076 KB |
Output is correct |
34 |
Correct |
3 ms |
4948 KB |
Output is correct |
35 |
Correct |
3 ms |
4948 KB |
Output is correct |
36 |
Correct |
3 ms |
4948 KB |
Output is correct |
37 |
Correct |
3 ms |
5076 KB |
Output is correct |
38 |
Correct |
3 ms |
5028 KB |
Output is correct |
39 |
Correct |
3 ms |
5076 KB |
Output is correct |
40 |
Correct |
3 ms |
5204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4948 KB |
Output is correct |
2 |
Correct |
2 ms |
4948 KB |
Output is correct |
3 |
Correct |
2 ms |
4948 KB |
Output is correct |
4 |
Correct |
3 ms |
4948 KB |
Output is correct |
5 |
Correct |
3 ms |
5024 KB |
Output is correct |
6 |
Correct |
3 ms |
4948 KB |
Output is correct |
7 |
Correct |
3 ms |
5028 KB |
Output is correct |
8 |
Correct |
3 ms |
5020 KB |
Output is correct |
9 |
Correct |
3 ms |
4948 KB |
Output is correct |
10 |
Correct |
3 ms |
5024 KB |
Output is correct |
11 |
Correct |
3 ms |
4948 KB |
Output is correct |
12 |
Correct |
3 ms |
4948 KB |
Output is correct |
13 |
Correct |
3 ms |
4948 KB |
Output is correct |
14 |
Correct |
3 ms |
4948 KB |
Output is correct |
15 |
Correct |
3 ms |
5024 KB |
Output is correct |
16 |
Correct |
3 ms |
5024 KB |
Output is correct |
17 |
Correct |
3 ms |
4948 KB |
Output is correct |
18 |
Correct |
3 ms |
5024 KB |
Output is correct |
19 |
Correct |
3 ms |
4948 KB |
Output is correct |
20 |
Correct |
3 ms |
4948 KB |
Output is correct |
21 |
Correct |
3 ms |
5204 KB |
Output is correct |
22 |
Correct |
3 ms |
4948 KB |
Output is correct |
23 |
Correct |
3 ms |
5020 KB |
Output is correct |
24 |
Correct |
3 ms |
4948 KB |
Output is correct |
25 |
Correct |
3 ms |
4948 KB |
Output is correct |
26 |
Correct |
4 ms |
5028 KB |
Output is correct |
27 |
Correct |
3 ms |
4948 KB |
Output is correct |
28 |
Correct |
3 ms |
5076 KB |
Output is correct |
29 |
Correct |
3 ms |
5076 KB |
Output is correct |
30 |
Correct |
4 ms |
5076 KB |
Output is correct |
31 |
Correct |
3 ms |
5076 KB |
Output is correct |
32 |
Correct |
3 ms |
5076 KB |
Output is correct |
33 |
Correct |
3 ms |
5076 KB |
Output is correct |
34 |
Correct |
3 ms |
4948 KB |
Output is correct |
35 |
Correct |
3 ms |
4948 KB |
Output is correct |
36 |
Correct |
3 ms |
4948 KB |
Output is correct |
37 |
Correct |
3 ms |
5076 KB |
Output is correct |
38 |
Correct |
3 ms |
5028 KB |
Output is correct |
39 |
Correct |
3 ms |
5076 KB |
Output is correct |
40 |
Correct |
3 ms |
5204 KB |
Output is correct |
41 |
Correct |
41 ms |
13496 KB |
Output is correct |
42 |
Correct |
25 ms |
8148 KB |
Output is correct |
43 |
Correct |
28 ms |
8984 KB |
Output is correct |
44 |
Correct |
29 ms |
8892 KB |
Output is correct |
45 |
Correct |
32 ms |
8952 KB |
Output is correct |
46 |
Correct |
73 ms |
12956 KB |
Output is correct |
47 |
Correct |
83 ms |
12980 KB |
Output is correct |
48 |
Correct |
75 ms |
13032 KB |
Output is correct |
49 |
Correct |
79 ms |
12960 KB |
Output is correct |
50 |
Correct |
14 ms |
7284 KB |
Output is correct |
51 |
Correct |
14 ms |
7340 KB |
Output is correct |
52 |
Correct |
14 ms |
7308 KB |
Output is correct |
53 |
Correct |
25 ms |
9612 KB |
Output is correct |
54 |
Correct |
26 ms |
9556 KB |
Output is correct |
55 |
Correct |
27 ms |
9500 KB |
Output is correct |
56 |
Correct |
3 ms |
5204 KB |
Output is correct |
57 |
Correct |
8 ms |
8492 KB |
Output is correct |
58 |
Correct |
30 ms |
21072 KB |
Output is correct |
59 |
Correct |
65 ms |
25192 KB |
Output is correct |
60 |
Correct |
43 ms |
13888 KB |
Output is correct |
61 |
Correct |
52 ms |
13200 KB |
Output is correct |