oj.uz

Submission #358310

# Submission time Handle Problem Language Result Execution time Memory
358310 2021-01-25T10:08:48 Z Bill_00 Cat in a tree (BOI17_catinatree) C++14
100 / 100
 174 ms 84588 KB 
#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define ff first
#define ss second
#define N 200001
using namespace std;
vector<int>child[N];
int n,d;
struct res{
	deque<int>dp;
	int size(){
		return dp.size();
	}
};
void attach(res &root,res &children){
	if(root.size()<children.size()) swap(root,children);
	res combined;
	combined.dp=children.dp;
	for(int i=0;i<children.size();i++){
		int other=max(d-i,i);
		if(other<children.size()){
			combined.dp[i]=max(combined.dp[i],root.dp[i]+children.dp[other]);
		}
		if(other<root.size()){
			combined.dp[i]=max(combined.dp[i],root.dp[other]+children.dp[i]);
		}
	}
	int maximum=0;
	for(int i=children.size();i>=1;i--){
		maximum=max(maximum,combined.dp[i-1]);
		root.dp[i-1]=max(maximum,root.dp[i-1]);
	}
}
res dfs(int node){
	res ans;
	ans.dp.push_back(1);
	for(int children:child[node]){
		res branch=dfs(children);
		branch.dp.push_front(branch.dp.front());
		attach(ans,branch);
	}
	return ans;
}
int main(){
	ios_base::sync_with_stdio(NULL);
	cin.tie(NULL);
	cout.tie(NULL);
	cin >> n >> d;
	for(int i=1;i<n;i++){
		int k;
		cin >> k;
		child[k].pb(i);
	}
	cout << dfs(0).dp.front();

}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 5 ms 4972 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 5 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 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 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 5 ms 4972 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 5 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 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 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 6 ms 6252 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 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 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 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 4 ms 5228 KB Output is correct
37 Correct 5 ms 5100 KB Output is correct
38 Correct 4 ms 5228 KB Output is correct
39 Correct 6 ms 5504 KB Output is correct
40 Correct 5 ms 6252 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5120 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 4 ms 5120 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 5 ms 4972 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 5 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 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 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 6 ms 6252 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 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 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 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 4 ms 5228 KB Output is correct
37 Correct 5 ms 5100 KB Output is correct
38 Correct 4 ms 5228 KB Output is correct
39 Correct 6 ms 5504 KB Output is correct
40 Correct 5 ms 6252 KB Output is correct
41 Correct 93 ms 9832 KB Output is correct
42 Correct 63 ms 7276 KB Output is correct
43 Correct 64 ms 7276 KB Output is correct
44 Correct 64 ms 7276 KB Output is correct
45 Correct 67 ms 7276 KB Output is correct
46 Correct 155 ms 9660 KB Output is correct
47 Correct 160 ms 9452 KB Output is correct
48 Correct 141 ms 9452 KB Output is correct
49 Correct 136 ms 9452 KB Output is correct
50 Correct 39 ms 5996 KB Output is correct
51 Correct 41 ms 5996 KB Output is correct
52 Correct 38 ms 5996 KB Output is correct
53 Correct 74 ms 6892 KB Output is correct
54 Correct 78 ms 6892 KB Output is correct
55 Correct 76 ms 6892 KB Output is correct
56 Correct 5 ms 5868 KB Output is correct
57 Correct 23 ms 20844 KB Output is correct
58 Correct 94 ms 76032 KB Output is correct
59 Correct 174 ms 84588 KB Output is correct
60 Correct 96 ms 10344 KB Output is correct
61 Correct 108 ms 10348 KB Output is correct