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Submission #758349

# Submission time Handle Problem Language Result Execution time Memory
758349 2023-06-14T13:34:15 Z MetalPower Cat in a tree (BOI17_catinatree) C++14
100 / 100
 114 ms 21036 KB 
#include <bits/stdc++.h>
using namespace std;

#define pii pair<int, int>
#define fi first
#define se second

const int MX = 2e5 + 10;
const int INF = 1e9 + 7;

int N, D, dep[MX]; vector<int> adj[MX];
pii dp[MX];

void dfs_dep(int u){
	for(int nxt : adj[u]){
		dep[nxt] = dep[u] + 1;
		dfs_dep(nxt);
	}
}

void dfs(int u){

	vector<pii> vec;
	for(int nxt : adj[u]){
		dfs(nxt);
		vec.push_back(dp[nxt]);
	}

	sort(vec.begin(), vec.end(), greater<pii>());
	int mx = dep[u], mxdep = INF, ans = 0;

	for(auto x : vec){
		if(mx <= x.fi){
			ans += x.se, mxdep = min(mxdep, x.fi);
			mx = max(mx, -x.fi + dep[u] + dep[u] + D);
		}else{
			ans += x.se - 1;
		}
	}

	if(mx <= dep[u]) ans++, mxdep = min(mxdep, dep[u]);
	dp[u] = {mxdep, ans};
}

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

	cin >> N >> D;
	for(int i = 1; i < N; i++){
		int p; cin >> p;
		adj[p].push_back(i);
	}

	dfs_dep(0);
	dfs(0);
	cout << dp[0].se << '\n';
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 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 5024 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5076 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 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 5024 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5076 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 5032 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 4948 KB Output is correct
26 Correct 3 ms 4948 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 5040 KB Output is correct
31 Correct 3 ms 5028 KB Output is correct
32 Correct 3 ms 4948 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 5028 KB Output is correct
36 Correct 3 ms 5028 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5036 KB Output is correct
40 Correct 3 ms 5208 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 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 5024 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5076 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 5032 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 4948 KB Output is correct
26 Correct 3 ms 4948 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 5040 KB Output is correct
31 Correct 3 ms 5028 KB Output is correct
32 Correct 3 ms 4948 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 5028 KB Output is correct
36 Correct 3 ms 5028 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5036 KB Output is correct
40 Correct 3 ms 5208 KB Output is correct
41 Correct 45 ms 12576 KB Output is correct
42 Correct 42 ms 8264 KB Output is correct
43 Correct 30 ms 8276 KB Output is correct
44 Correct 29 ms 8360 KB Output is correct
45 Correct 45 ms 8348 KB Output is correct
46 Correct 114 ms 11688 KB Output is correct
47 Correct 110 ms 11724 KB Output is correct
48 Correct 104 ms 11640 KB Output is correct
49 Correct 87 ms 11696 KB Output is correct
50 Correct 21 ms 7084 KB Output is correct
51 Correct 19 ms 7172 KB Output is correct
52 Correct 15 ms 7140 KB Output is correct
53 Correct 31 ms 9240 KB Output is correct
54 Correct 34 ms 9144 KB Output is correct
55 Correct 35 ms 9164 KB Output is correct
56 Correct 3 ms 5160 KB Output is correct
57 Correct 8 ms 7892 KB Output is correct
58 Correct 31 ms 17948 KB Output is correct
59 Correct 70 ms 21036 KB Output is correct
60 Correct 61 ms 13084 KB Output is correct
61 Correct 76 ms 12244 KB Output is correct