#include<iostream>
#include<stdio.h>
#include<math.h>
#include<map>
#include<string>
#include<algorithm>
#include<vector>
#include<string.h>
#include<utility>
#include<set>
#include<cmath>
#include<queue>
#include<deque>
#include<functional>
#include<stack>
#include<limits.h>
#include<iomanip>
#include<unordered_map>
#include<numeric>
#include<tuple>
#include<bitset>
using namespace std;
#define MOD 1000000007
#define int long long
#define ss second
#define ff first
#define endl '\n'
int n,d;
const int mxN=2e5+1;
vector<int> v[mxN];
vector<vector<int> > dp(mxN,vector<int>(2));
void dfs(int a, int p){
int mx=1e9,cnt=0;
for(auto node: v[a]){
if(node!=p){
dfs(node,a);
if(mx+dp[node][1]>=d){
cnt=cnt+dp[node][0];
mx=min(mx,dp[node][1]);
}else{
cnt=cnt+dp[node][0]-1;
mx=max(mx,dp[node][1]);
}
}
}
if(mx>=d){
dp[a][1]=1;
dp[a][0]=cnt+1;
}else{
dp[a][0]=cnt;
dp[a][1]=mx+1;
}
}
void solve(){
cin>>n>>d;
for(int i=1; i<n; i++){
int a; cin>>a;
v[a].push_back(i);
v[i].push_back(a);
}
dfs(0,0);
cout<<dp[0][0];
}
signed main(){
// freopen("file.in", "r", stdin);
// freopen("file.out", "w", stdout);
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int T=1;
// cin>>T;
while(T--){
solve();
cout<<endl;
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
15960 KB |
Output is correct |
2 |
Correct |
13 ms |
15964 KB |
Output is correct |
3 |
Correct |
13 ms |
16124 KB |
Output is correct |
4 |
Correct |
12 ms |
15964 KB |
Output is correct |
5 |
Correct |
12 ms |
15964 KB |
Output is correct |
6 |
Correct |
12 ms |
15964 KB |
Output is correct |
7 |
Correct |
13 ms |
15964 KB |
Output is correct |
8 |
Correct |
12 ms |
15964 KB |
Output is correct |
9 |
Correct |
12 ms |
15964 KB |
Output is correct |
10 |
Correct |
12 ms |
15964 KB |
Output is correct |
11 |
Correct |
13 ms |
15964 KB |
Output is correct |
12 |
Correct |
12 ms |
15960 KB |
Output is correct |
13 |
Correct |
15 ms |
15964 KB |
Output is correct |
14 |
Correct |
12 ms |
15964 KB |
Output is correct |
15 |
Correct |
12 ms |
15960 KB |
Output is correct |
16 |
Correct |
13 ms |
15964 KB |
Output is correct |
17 |
Correct |
13 ms |
15960 KB |
Output is correct |
18 |
Correct |
13 ms |
16200 KB |
Output is correct |
19 |
Correct |
12 ms |
15960 KB |
Output is correct |
20 |
Correct |
12 ms |
15964 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
15960 KB |
Output is correct |
2 |
Correct |
13 ms |
15964 KB |
Output is correct |
3 |
Correct |
13 ms |
16124 KB |
Output is correct |
4 |
Correct |
12 ms |
15964 KB |
Output is correct |
5 |
Correct |
12 ms |
15964 KB |
Output is correct |
6 |
Correct |
12 ms |
15964 KB |
Output is correct |
7 |
Correct |
13 ms |
15964 KB |
Output is correct |
8 |
Correct |
12 ms |
15964 KB |
Output is correct |
9 |
Correct |
12 ms |
15964 KB |
Output is correct |
10 |
Correct |
12 ms |
15964 KB |
Output is correct |
11 |
Correct |
13 ms |
15964 KB |
Output is correct |
12 |
Correct |
12 ms |
15960 KB |
Output is correct |
13 |
Correct |
15 ms |
15964 KB |
Output is correct |
14 |
Correct |
12 ms |
15964 KB |
Output is correct |
15 |
Correct |
12 ms |
15960 KB |
Output is correct |
16 |
Correct |
13 ms |
15964 KB |
Output is correct |
17 |
Correct |
13 ms |
15960 KB |
Output is correct |
18 |
Correct |
13 ms |
16200 KB |
Output is correct |
19 |
Correct |
12 ms |
15960 KB |
Output is correct |
20 |
Correct |
12 ms |
15964 KB |
Output is correct |
21 |
Correct |
20 ms |
16220 KB |
Output is correct |
22 |
Correct |
13 ms |
15964 KB |
Output is correct |
23 |
Correct |
13 ms |
15964 KB |
Output is correct |
24 |
Correct |
13 ms |
15964 KB |
Output is correct |
25 |
Correct |
13 ms |
15964 KB |
Output is correct |
26 |
Correct |
12 ms |
15964 KB |
Output is correct |
27 |
Correct |
12 ms |
15964 KB |
Output is correct |
28 |
Correct |
13 ms |
15960 KB |
Output is correct |
29 |
Correct |
13 ms |
16080 KB |
Output is correct |
30 |
Correct |
12 ms |
15972 KB |
Output is correct |
31 |
Correct |
16 ms |
15964 KB |
Output is correct |
32 |
Correct |
12 ms |
15964 KB |
Output is correct |
33 |
Correct |
13 ms |
15960 KB |
Output is correct |
34 |
Correct |
13 ms |
16128 KB |
Output is correct |
35 |
Correct |
14 ms |
16140 KB |
Output is correct |
36 |
Correct |
12 ms |
15960 KB |
Output is correct |
37 |
Correct |
12 ms |
15960 KB |
Output is correct |
38 |
Correct |
13 ms |
15964 KB |
Output is correct |
39 |
Correct |
17 ms |
16216 KB |
Output is correct |
40 |
Correct |
15 ms |
16228 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
15 ms |
15960 KB |
Output is correct |
2 |
Correct |
13 ms |
15964 KB |
Output is correct |
3 |
Correct |
13 ms |
16124 KB |
Output is correct |
4 |
Correct |
12 ms |
15964 KB |
Output is correct |
5 |
Correct |
12 ms |
15964 KB |
Output is correct |
6 |
Correct |
12 ms |
15964 KB |
Output is correct |
7 |
Correct |
13 ms |
15964 KB |
Output is correct |
8 |
Correct |
12 ms |
15964 KB |
Output is correct |
9 |
Correct |
12 ms |
15964 KB |
Output is correct |
10 |
Correct |
12 ms |
15964 KB |
Output is correct |
11 |
Correct |
13 ms |
15964 KB |
Output is correct |
12 |
Correct |
12 ms |
15960 KB |
Output is correct |
13 |
Correct |
15 ms |
15964 KB |
Output is correct |
14 |
Correct |
12 ms |
15964 KB |
Output is correct |
15 |
Correct |
12 ms |
15960 KB |
Output is correct |
16 |
Correct |
13 ms |
15964 KB |
Output is correct |
17 |
Correct |
13 ms |
15960 KB |
Output is correct |
18 |
Correct |
13 ms |
16200 KB |
Output is correct |
19 |
Correct |
12 ms |
15960 KB |
Output is correct |
20 |
Correct |
12 ms |
15964 KB |
Output is correct |
21 |
Correct |
20 ms |
16220 KB |
Output is correct |
22 |
Correct |
13 ms |
15964 KB |
Output is correct |
23 |
Correct |
13 ms |
15964 KB |
Output is correct |
24 |
Correct |
13 ms |
15964 KB |
Output is correct |
25 |
Correct |
13 ms |
15964 KB |
Output is correct |
26 |
Correct |
12 ms |
15964 KB |
Output is correct |
27 |
Correct |
12 ms |
15964 KB |
Output is correct |
28 |
Correct |
13 ms |
15960 KB |
Output is correct |
29 |
Correct |
13 ms |
16080 KB |
Output is correct |
30 |
Correct |
12 ms |
15972 KB |
Output is correct |
31 |
Correct |
16 ms |
15964 KB |
Output is correct |
32 |
Correct |
12 ms |
15964 KB |
Output is correct |
33 |
Correct |
13 ms |
15960 KB |
Output is correct |
34 |
Correct |
13 ms |
16128 KB |
Output is correct |
35 |
Correct |
14 ms |
16140 KB |
Output is correct |
36 |
Correct |
12 ms |
15960 KB |
Output is correct |
37 |
Correct |
12 ms |
15960 KB |
Output is correct |
38 |
Correct |
13 ms |
15964 KB |
Output is correct |
39 |
Correct |
17 ms |
16216 KB |
Output is correct |
40 |
Correct |
15 ms |
16228 KB |
Output is correct |
41 |
Correct |
48 ms |
23636 KB |
Output is correct |
42 |
Correct |
35 ms |
20304 KB |
Output is correct |
43 |
Correct |
35 ms |
20304 KB |
Output is correct |
44 |
Correct |
35 ms |
20312 KB |
Output is correct |
45 |
Correct |
37 ms |
20392 KB |
Output is correct |
46 |
Correct |
73 ms |
24664 KB |
Output is correct |
47 |
Correct |
106 ms |
24652 KB |
Output is correct |
48 |
Correct |
71 ms |
24556 KB |
Output is correct |
49 |
Correct |
81 ms |
24628 KB |
Output is correct |
50 |
Correct |
30 ms |
20556 KB |
Output is correct |
51 |
Correct |
27 ms |
20496 KB |
Output is correct |
52 |
Correct |
31 ms |
20560 KB |
Output is correct |
53 |
Correct |
56 ms |
25204 KB |
Output is correct |
54 |
Correct |
54 ms |
25180 KB |
Output is correct |
55 |
Correct |
57 ms |
25204 KB |
Output is correct |
56 |
Correct |
13 ms |
16220 KB |
Output is correct |
57 |
Correct |
18 ms |
18312 KB |
Output is correct |
58 |
Correct |
39 ms |
26960 KB |
Output is correct |
59 |
Correct |
62 ms |
32584 KB |
Output is correct |
60 |
Correct |
45 ms |
23756 KB |
Output is correct |
61 |
Correct |
52 ms |
24012 KB |
Output is correct |